CN104883749A - Ocean stereoscopic monitoring sensor network deployment method based on floating cable - Google Patents

Abstract

The invention provides an ocean stereoscopic monitoring sensor network deployment method based on floating cables. The ocean stereoscopic monitoring sensor network deployment method is characterized in that: a plurality of linear combined nodes are deployed in the ocean; each of the linear combined nodes is composed of a water surface node floating on the ocean surface, a plurality of on-cable underwater nodes fixed on a cable, and a seabed node; the water surface nodes, the on-cable underwater nodes and the seabed nodes are connected into the linear combined nodes in series through the cables; and the linear combined nodes are fixed at the seabed through seabed anchor blocks. According to the ocean stereoscopic monitoring sensor network deployment method based on the floating cables, the optimal ocean surface coverage node number and monitoring radius condition for covering the desired nodes in a three-dimensional mode are obtained according to the ocean floating characteristics and ocean monitoring coverage requirements of the linear combined nodes. The ocean stereoscopic monitoring sensor network deployment method can satisfy the long-time deployment requirement for ocean monitoring, is low in deployment cost and algorithm overhead, is high in monitoring efficiency, and can be used in the fields such as ocean environment monitoring, ocean disaster monitoring and avoidance, and ocean military security detection and monitoring.

Description

A kind of ocean stereo monitoring sensor network disposition method based on floating cable

Technical field

The present invention relates to marine monitoring wireless sensor network technology, particularly relate to a kind of dispositions method of marine monitoring wireless sensor network, be specifically related to a kind of ocean stereo monitoring wireless sensor network disposition method based on floating cable, marine environmental monitoring, Oceanic disasters monitoring can be applied to and avoid, marine safety detect and the field such as supervision.

Background technology

Sea sensor network (Ocean Sensor Networks, OSNs) be by wireless sensor network (Wireless SensorNetworks, WSN) be deployed in complicated variable marine environment, realize small scale closely carries out Real-Time Monitoring a kind of sensor network to marine environment.Ocean wireless sensor network generally comprises water surface wireless sensor network and underwater wireless sensor network.Water surface wireless sensor network generally uses radio to carry out communicating and networking, and underwater wireless sensor network mainly utilizes the underwater sound to realize communication and networking at present.Although sea sensor network has the maximum radio communication channel of difficulty, such as its ocean water sound communication channel has high time delay, time delay dynamic change, high decay, high bit-error, multipath effect, Doppler spread is serious, the features such as the dynamic change of channel height and low bandwidth, but because sea sensor network closely high density can carry out the deployment of marine monitoring application, such as wind direction can be monitored, wave height, tide, water temperature, illumination, water pollution, safety such as to swarm at the information relevant to ocean, really can realize the timely collection of oceanographic data, in recent years along with countries in the world are for the pay attention to day by day of ocean right, in environmental monitoring, structure detection, military supervision, disaster such as to avoid be rapidly developed at the field.

But due to the adverse circumstances that ocean is complicated and changeable, the sensor network that can realize monitoring in ocean deploy is not an easy to do thing, especially dispose ocean stereo monitoring network particularly difficult.In general, when disposing ocean stereo monitoring network, free-floating node, autonomous aircraft (AUVs) can be used or adopt fixing deployment way.Due to the effect of ocean current, free-floating node can move freely along with ocean current, thus finally can exceed communication radius and out of touch, is therefore not suitable for the deployment scenario needing long term monitoring.And AUV is expensive at present, dispose a long term monitoring network unrealistic.And fix deployment way in the past, the single float type node deployment mode of general employing, the needs for ocean stereo monitoring can not be met.Another one aspect, because marine monitoring network often needs Bound moisture torus network and network under water, uses different communication modes, how according to marine monitoring needs, is got up by two kinds of network integrations and effectively dispose, and is also the problem needing research.In addition, due to the wave of ocean, tide, the impact such as ocean current, ocean current under water, deployment ocean stereo monitoring network is all needed to take into full account, such as above-mentioned factor can cause disposing node motion, but if these can be utilized to move turn bane into boon, significant for the practical application disposing ocean wireless sensor network, be an important research direction in this field at present.

Summary of the invention

Technical problem to be solved by this invention is, provides a kind of dispositions method of sea sensor network.

In order to solve the problems of the technologies described above, the invention provides the three-dimensional sensor network disposition method in a kind of ocean based on floating cable, it is characterized in that:

Some wire combined joints are deployed in ocean, wherein, wire combined joint described in each to comprise on the water surface node swimming in sea, the multiple cables being fixed on cable node and subsea node composition under water, on water surface node, cable, node and subsea node are concatenated into wire combined joint by hawser under water, and wire combined joint is fixed on seabed by seabed anchor block;

Wire combined joint adopts low power communication pattern to adopt the networking of underwater sound communication mode initiation group interior nodes by water surface node, and subsea node and cable stationary nodes adopt multi-hop mode and floating on water node to form wire multihop network;

Described water surface node adopts high power communication pattern to realize water surface networking, and according to floating on water characteristic, adjustment monitoring radius meets water surface coverage requirement;

On cable, node is according to floatation characteristic and coverage requirement under water, and adjustment monitoring radius and communication radius, realize network solid under water and cover monitoring;

Part water surface node is equipped with GPS positioner and remote-distance communication device.

Wherein water surface node has two kinds of communications, and radio communication system is used for the internodal communication of the water surface, and node and subsea node realize communicating underwater sound communication mode under water with on cable.

Further, wire combined joint rectangle in marine site is disposed, by the dark h in sea, maximum tidal height h _tidewith hawser surplus l _mdetermine the length l=h+h of hawser _tide+ l _m, and the maximum floating radius of water surface node is firmly got out by the length of hawser and sea distance L between adjacent water surface node _aBdemand fulfillment

And the power that water surface sensor selection problem is applicable to realizes water surface networking, according to floating on water characteristic, adjustment monitoring radius meets sea all standing requirement, and the communication radius of water surface node and monitoring radius are respectively ComR, SenR, realize all standing satisfy condition for $\mathrm{SenR}\&GreaterEqual;\sqrt{2}\sqrt{l^2-h^2}+\frac{\sqrt{2}}{2}{L}_{\mathrm{AB}},$ Namely $2\sqrt{l^2-h^2}<L_{\mathrm{AB}}\&le;\sqrt{2}\mathrm{SenR}-2\sqrt{l^2-h^2}.$

The minimum node number of all standing in the marine site that target area is L × W

On the cable of wire combined joint, node is positioned under water under water, carries out all standing under water, and a wire combined joint deploy has N _lindividual node, being then spaced apart Δ h and then can obtaining of node the condition of node all standing under water under water on cable is drawn by node separation Δ h.Further, water surface node adopts high power communication pattern to realize water surface networking, and according to floating on water characteristic, adjustment monitoring radius meets water surface coverage requirement;

Monitoring information, after the network integration, mails to terminal use by the node possessing remote-distance communication device.

Some wire wireless senser combined joints are disposed by the present invention, wherein, described in each, wire combined joint is fixed together by multiple wireless sensor node and hawser, and node comprises the water surface wireless sensor node, the wireless sensor node and forming with the seabed wireless sensor node that seabed anchor block is fixed together in water that swim in sea.Swim in the wireless sensor node of the water surface together with water surface float, part of nodes is equipped with GPS positioner and the remote-wireless communication mode with satellite etc.Dispose underwater node and adopt underwater sound communication mode, node is evenly fixed on cable, and seabed anchor block and water surface float link together by this cable.This dispositions method, according to wire combined joint marine float characteristic and marine monitoring coverage requirement, show that optimum sea overlay node number and 3 D stereo cover required node monitors radius condition.The present invention can meet marine monitoring and dispose needs for a long time, lower deployment cost and algorithm expense low.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only one embodiment of the present of invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of the three-dimensional sensor network disposition method embodiment in a kind of ocean provided by the invention;

Fig. 2 is the structural representation of wire combined joint of the present invention;

Fig. 3 to be wire combined joint swim in long-time position view;

Fig. 4 is that wire combined joint is for the maximum radius schematic diagram that swims under different tidal height and the long surplus of rope;

Fig. 5 is that the plane of embodiment disposes schematic diagram;

Fig. 6 is that the solid of embodiment disposes schematic diagram;

Fig. 7 prevents cable takeup distance schematic diagram between embodiment node;

Fig. 8 is that sea covers minimum monitoring radius schematic diagram;

Fig. 9 is that sea covers minimum deployment interstitial content schematic diagram;

Figure 10 is that node is cruised area schematic diagram;

Figure 11 covers monitoring radius schematic diagram under water;

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 1 is the schematic flow sheet of the embodiment of the three-dimensional sensor network disposition method in a kind of ocean based on floating cable provided by the invention, and as shown in Figure 1, the method comprising the steps of:

P1, some wire combined joints are deployed in ocean, wherein, the deployment that wire combined joint described in each comprises the water surface node swimming in sea, the multiple underwater sound sensor node be fixed on cable is connected with described water surface node the subsea node being fixed on seabed form, and part water surface node is equipped with GPS positioner and remote-distance communication device.

With reference to figure 2, wherein, described wire combined joint by water surface node, cable under water node and subsea node form, seabed anchor block is connected with water surface node by described hawser.Water surface node has two kinds of communications, and wherein radio communication system is used for the internodal communication of the water surface, and node and subsea node realize communicating underwater sound communication mode under water with on underwater cable.Wire combined joint has the advantage of network and water surface network integration under water, can make full use of the respective advantage of two kinds of networks.Part water surface node is equipped with GPS positioner and remote-distance communication device, and GPS positioner makes water surface node locating self-position, and the network monitor information of deployment can be sent in user's hand by remote-distance communication device in real time.

Optionally, the water surface node of outfit GPS positioner and remote-distance communication device can be equipped with solar battery apparatus is also a kind of option.Further alternative, can the cable of electric energy transmitting by selecting, the water surface energy also on the basis adopting storage battery, can be supplemented power supply as a kind of standby by node under water, and this depends on disposes the factor such as monitoring time, cost.

Water surface node is fixed on water surface float, and hawser connection water surface float and under water anchor block, move with wave in controlled range to make water surface node.Fig. 3 shows after wire combined joint disposes, and affects floating on water node to swim in long-time position view by wave, tide etc.Wherein, h is Hai Shen, l is rope length, and r is the maximum radius that swims.According to geological theorems, can obtain:

$r=\sqrt{l^2-h^2}$ Formula (1)

Consider when actual deployment, the length of hawser will have certain surplus, is broken by hawser to prevent wave.In other cases, additionally increase cable length, the area of cruising of cable node can be expanded.Specifically consider the impact of Hai Shen and tide, the length of actual hawser is l=h+h _tide+ l _m, wherein h _tidefor maximum tidal height, l _mfor hawser surplus.

Fig. 4 shows the relation of water surface node maximum swim radius and Hai Shen, tidal height, hawser surplus.Hai Shen is set to 20m to 100m, and tidal height and hawser surplus combine respectively and be provided with 3 kinds of situations.As can be seen from the figure, along with the increase of Hai Shen, the maximum radius also corresponding increase of swimming of node.And when fixing Hai Shen and hawser surplus, along with the increase of tidal height, the corresponding increase of maximum cruising radius of node.Must, Hai Shen, tidal height and hawser surplus all can affect the maximum cruising radius of node to some extent, but in these factors, obvious Hai Shen is the most key influencing factor.It is pointed out that when actual deployment, different local Hai Shen, tidal height can be different, and therefore, the selection of actual cable length all will be considered fully in advance, and these all can affect the actual float position of floating on water node.

Deployment due to this network can be that artificial boats and ships or aircraft broadcast sowing mode, but as other network design, the deployment of network can have influence on networking and the working condition of network.The present embodiment discusses the situation of disposing according to rectangular area shown in Fig. 5, and other deployment scenario can according to the present embodiment in addition expanded application.Rectangular area is disposed to have and is disposed simply, the feature that region overlay is easy.Fig. 5 is that the plane of embodiment disposes schematic diagram, and the solid that Fig. 6 is embodiment disposes schematic diagram.

When water surface node is after deployment completes, there is the feature with the controlled movement of ocean current, for preventing node after deployment, due to shift position too close to and cause cable takeup, concrete rectangle disposes distance demand fulfillment certain condition.As shown in Figure 7, A, B, C, D are 4 nodes of an adjacent deployment of rectangle, and in order to prevent internodal cable takeup together, node A and Node B are disposed distance and be set to L _aB, then demand fulfillment:

$L_{\mathrm{AB}}>2r=2\sqrt{l^2-h^2}$ Formula (2)

P2, wire combined joint adopt low power communication pattern to adopt the networking of underwater sound communication mode initiation group interior nodes by water surface node, and subsea node and cable stationary nodes adopt multi-hop mode and floating on water node to form wire multihop network.The water surface node being equipped with GPS positioner obtains positional information.The node being equipped with remote-distance communication device sets up telecommunication mode.The power that sea sensor selection problem is applicable to realizes water surface networking, and according to floating on water characteristic, adjustment monitoring radius meets sea coverage requirement.Specifically comprise the steps:

P21, wire combined joint adopt low power communication pattern to adopt the networking of underwater sound communication mode initiation group interior nodes by water surface node, due to water surface node own water sound communication module, and hawser node and subsea node all have the unique ID physical address of whole network, and it is known before deployment, therefore simple networking mode is used, such as calling, response mode, can by reliable for this wire combined joint wireless connections.And owing to informing respective No. ID by communication in wire combined joint, therefore subsea node and cable stationary nodes can adopt multi-hop mode and floating on water node to form wire multihop network, and multi-hop mode due to communication distance short, effectively can save node energy consumption, extend the life span of whole network.And having had a lot of research about multihop network at present, the present invention repeats no more.

The water surface node of P22, outfit GPS positioner obtains positional information.The node being equipped with remote-distance communication device sets up telecommunication mode.Because the positional information needing monitoring event to occur is applied in marine monitoring, therefore, part of nodes is equipped with GPS positioner, to obtain the present position information of water surface node, although water surface node can drift about with ocean current, but send its present position information in certain concrete time, thus subsea node can utilize these water surface locating information, carries out self poisoning.In view of having had a lot of research about Underwater Navigation at present, the present invention has also repeated no more.Be equipped with the node of remote-distance communication device and set up telecommunication passage, so as network set up after monitoring information or the far distance controlled information of network is sent in time.

The power that P23, sea sensor selection problem are applicable to realizes water surface networking, and according to offshore floating characteristic, adjustment monitoring radius meets sea coverage requirement.

The present embodiment adopts rectangle as shown in Figure 5 to dispose, and according to the difference of embody rule, covers have different requirements for the water surface, generally speaking, need the region of node deployment to realize all standing, also namely after monitored area generation event, can ensure at least to be arrived by a node monitors.All standing is easy to expand to k-covering by disposing redundant node.As shown in Figure 5, if dispose the region that the parallel node of two row formed to meet all standing, so dispose the capable node of k+1 and just can realize k-covering.

All standing relates to communication radius and the monitoring radius of node, and we establish the communication radius of water surface node and monitoring radius to be respectively ComR, SenR, and suppose SenR≤ComR.For simplified illustration, we get 4 adjacent nodes that rectangle is disposed, and as shown in Figure 8, can prove, if will realize all standing, as long as meet:

$\mathrm{SenR}\&GreaterEqual;\sqrt{2}\sqrt{l^2-h^2}+\frac{\sqrt{2}}{2}{L}_{\mathrm{AB}}$ Formula (3)

In conjunction with utilizing formula (2), formula (3) can the deployment conditions of accomplished all standing:

$2\sqrt{l^2-h^2}<L_{\mathrm{AB}}\&le;\sqrt{2}\mathrm{SenR}-2\sqrt{l^2-h^2}$ Formula (4)

According to the deployment conditions of above-mentioned all standing, for the deployment marine site determined, can according to above-mentioned condition, the deployment distance for node is controlled, to meet the deployment conditions of all standing.Further alternative; for being equipped with communication radius and monitoring the node that radius can select control; although usually can extra-pay be increased; after deployment, configured subsea pressure transducer can be passed through and obtains field data parameters such as disposing Hai Shen, according to above-mentioned formula; determine suitable transmitting power and monitoring distance; both met coverage requirement, and made again energy consumption reach minimum, thus extend the life cycle of whole network.

Accordingly, according to obtain condition, easily obtain the minimum node number required for the fixing rectangular area of deployment one.Suppose to need the target area disposing node to be L × W, can minimum node number N needed for accomplished all standing _minfor:

formula (5)

Fig. 9 shows and meets minimum node number situation needed for all standing, and wherein disposing area is 5000m × 200m, and the depth of water gets 50m respectively, and 70m, 90m contrast, and maximum tidal height and the long surplus of rope get h respectively _tide=3m, l _m=3m.As can be seen from the figure, along with the increase of monitoring radius, required deployment minimum node number can decline to some extent.And under square one, along with the increase of Hai Shen, the minimum deployment number of required node also can increase to some extent.

P3, under water node are according to floatation characteristic and coverage requirement, and adjustment monitoring radius and communication radius, realize network solid under water and cover monitoring.Monitoring information, after the network integration, mails to terminal use by the node possessing remote-distance communication device.

The three-dimensional sensor network in ocean based on floating cable not only will realize the coverage of the water surface, and according to embody rule requirement, underwater monitoring region also will realize coverage requirement.Cover relevant with the node density of cable deploy under water, for simplicity, we suppose that the node on cable evenly disposes, and hypothesis deploys N _lindividual node, being then spaced apart Δ h and then can obtaining of node the size of Δ h can affect the deployment number of node under water on cable, and monitoring radius when can affect node demand fulfillment coverage condition under water.Specifically, if Δ h diminishes, required interstitial content increases, and monitoring radius can reduce, and cost can increase to some extent, but network design posterior nodal point is closely cruised, the area of monitoring also can correspondingly increase.Figure 10 shows in varied situations, adopts different Δ h, and node is cruised the size cases of area.

Because the covering problem of underwater monitoring is relevant to application, we just swarm into monitoring and measuring application and covering problem are under water discussed, and for other embody rule, can carry out similar discussion as required.For swarming into for monitoring, swarming into object and entering stereoscopic monitoring network and generally have one and swarm into the process of breaking, therefore, all standing realizing swarming into the face of breaking only being needed for this application.As shown in figure 11, we are taken at 4 nodes of adjacent deployment on water surface vertical plane, A, B, C, D, and its interior joint A and Node B are deployed on the water surface, and node F and node E is the response wire combined joint neighbor node of its correspondence.R,r _fthe maximum floating radius of node A and Node B and node E and node F respectively.Suppose that disposing Hai Shen is h, can obtain:

$r_F=\frac{h-\mathrm{\&Delta;h}}{h}\&times;r$ Formula (6)

As shown in figure 11, the ultimate range of Node B and node F is designated as L _b'F', we establish the communication radius of node under water and monitoring radius to be respectively ComRU, SenRU, and suppose SenRU≤ComRU, if then will realize all standing in face of swarming into, as long as meet:

$\begin{array}{c}\mathrm{SenRu}>\frac{1}{2}{L}_{B^{\&prime;}{F}^{\&prime;}}\\ =\frac{1}{2}\sqrt{{(L_{\mathrm{AB}}+r_F+r)}^2+{\left(\mathrm{\&Delta;h}\right)}^2}\\ =\frac{1}{2}\sqrt{{(L_{\mathrm{AB}}+\frac{2h-\mathrm{\&Delta;h}}{h}\sqrt{l^2-h^2})}^2+{\left(\mathrm{\&Delta;h}\right)}^2}\end{array}$ Formula (7)

The invention provides the three-dimensional wireless sensor network disposition method in a kind of ocean based on floating cable, comprise step: disposed by some wire wireless senser combined joints, wherein, described in each, wire combined joint is fixed together by multiple wireless sensor node and hawser, and node comprises the water surface wireless sensor node, the wireless sensor node and forming with the seabed wireless sensor node that seabed anchor block is fixed together in water that swim in sea.Swim in the wireless sensor node of the water surface together with water surface float, part of nodes is equipped with GPS positioner and the remote-wireless communication mode with satellite etc.Dispose underwater node and adopt underwater sound communication mode, node is evenly fixed on cable, and seabed anchor block and water surface float link together by this cable.This dispositions method, according to wire combined joint marine float characteristic and marine monitoring coverage requirement, show that optimum sea overlay node number and 3 D stereo cover required node monitors radius condition.The present invention can meet marine monitoring and dispose needs for a long time, lower deployment cost and algorithm expense low, monitoring efficiency is high, marine environmental monitoring, Oceanic disasters monitoring can be applied to and avoid, ocean military security detect and the field such as supervision.

It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.In several embodiments that the application provides, should be understood that, the method disclosed can realize by another way.

Professional can also recognize further, in conjunction with the algorithm steps of each example that embodiment disclosed herein describes, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (6)

1., based on the three-dimensional sensor network disposition method in ocean of floating cable, it is characterized in that:

Some wire combined joints are deployed in ocean, wherein, wire combined joint described in each to comprise on the water surface node swimming in sea, the multiple cables being fixed on cable node and subsea node composition under water, on water surface node, cable, node and subsea node are concatenated into wire combined joint by hawser under water, and wire combined joint is fixed on seabed by seabed anchor block;

Wire combined joint adopts low power communication pattern to adopt the networking of underwater sound communication mode initiation group interior nodes by water surface node, and subsea node and cable stationary nodes adopt multi-hop mode and floating on water node to form wire multihop network;

Described water surface node adopts high power communication pattern to realize water surface networking, and according to floating on water characteristic, adjustment communication radius meets water surface coverage requirement; On described cable, node is according to floatation characteristic and coverage requirement under water, and adjustment monitoring radius and communication radius, realize network solid under water and cover monitoring;

Part water surface node is equipped with GPS positioner and remote-distance communication device.

2. the three-dimensional sensor network disposition method in the ocean based on floating cable according to claim 1, it is characterized in that, water surface node has two kinds of communications, wherein radio communication system is used for the internodal communication of the water surface, and node and subsea node realize communicating underwater sound communication mode under water with on underwater cable.

3. the three-dimensional sensor network disposition method in the ocean based on floating cable according to claim 1, is characterized in that, wire combined joint rectangle in marine site is disposed, by the dark h in sea, maximum tidal height h _tidewith hawser surplus l _mdetermine the length l=h+h of hawser _tide+ l _m, and the maximum floating radius of water surface node is firmly got out by the length of hawser and sea distance L between adjacent water surface node _aBdemand fulfillment

4. the three-dimensional sensor network disposition method in the ocean based on floating cable according to claim 3, it is characterized in that, the power that water surface sensor selection problem is applicable to realizes water surface networking, according to floating on water characteristic, adjustment monitoring radius meets sea all standing requirement, the communication radius of water surface node and monitoring radius are respectively ComR, SenR, realize all standing satisfy condition for $\mathrm{Sen}\&GreaterEqual;\sqrt{2}\sqrt{l^2-h^2}+\frac{\sqrt{2}}{2}{L}_{\mathrm{AB}},$ Namely $2\sqrt{l^2-h^2}<L_{\mathrm{AB}}\&le;\sqrt{2}\mathrm{SenR}-2\sqrt{l^2-h^2}.$

5. the three-dimensional sensor network disposition method in the ocean based on floating cable according to claim 4, is characterized in that, the minimum node number of all standing in the marine site that target area is L × W

6. the three-dimensional sensor network disposition method in the ocean based on floating cable according to claim 1 or 3, it is characterized in that, on the cable of wire combined joint, node is positioned under water under water, carries out all standing under water, and a wire combined joint deploy has N _lindividual node, being then spaced apart Δ h and then can obtaining of node the condition of node all standing under water under water on cable is drawn by node separation Δ h.