CN107884794A - A kind of intelligent differential data screening technique for retaining given amount of data - Google Patents
A kind of intelligent differential data screening technique for retaining given amount of data Download PDFInfo
- Publication number
- CN107884794A CN107884794A CN201610863658.4A CN201610863658A CN107884794A CN 107884794 A CN107884794 A CN 107884794A CN 201610863658 A CN201610863658 A CN 201610863658A CN 107884794 A CN107884794 A CN 107884794A
- Authority
- CN
- China
- Prior art keywords
- satellite
- data
- noise ratio
- signal
- differential data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012216 screening Methods 0.000 title claims abstract description 15
- 241001269238 Data Species 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/40—Correcting position, velocity or attitude
- G01S19/41—Differential correction, e.g. DGPS [differential GPS]
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a kind of intelligent differential data screening technique for retaining given amount of data, comprise the following steps：Step S1, all differential datas are first cached；Step S2, the signal to noise ratio of every satellite in differential data is solved, these satellites are resequenced from low to high by signal to noise ratio；Step S3, that minimum satellite of signal to noise ratio is deleted, and checks whether the remaining satellite of satellite system belonging to this satellite is less than default satellite number, if being less than, deletes the satellite system residue satellite；Step S4, data volume is recalculated, is contrasted with target data amount, the repeat step S3 if data volume is still above target data amount；Step S4, remaining satellite is re-grouped package and sent.
Description
Technical field
The present invention relates to GNSS receiver fields of measurement, and in particular to a kind of intelligent difference number for retaining given amount of data
According to screening technique.
Background technology
The differential data data volume that GNSS boards come out with searching star number into positive correlation, when search star it is relatively good when data volume
The limit of some transmission equipment can be exceeded, cause differential data normally to send.Tradition limitation differential data amount method be
Maximum height limit angle of cut-off, but this method has the drawbacks of many obvious：When height angle of cut-off is transferred to very high, resolving is defended
Star is concentrated in that panel region of the crown, causes calculation accuracy very poor；The important satellite of some low angles can be deleted
Deng.
The content of the invention
The invention provides a kind of intelligent differential data screening technique for retaining given amount of data, comprise the following steps：
Step S1, all differential datas are first cached；
Step S2, the signal to noise ratio of every satellite in differential data is solved, these satellites are pressed signal to noise ratio from low to high again
Sequence；
Step S3, that minimum satellite of signal to noise ratio is deleted, and checks that the satellite system belonging to this satellite is remaining and defends
Whether star is less than default satellite number, if being less than, deletes the satellite system residue satellite；
Step S4, data volume is recalculated, is contrasted with target data amount, if data volume is still above target data amount
Repeat step S3；
Step S4, remaining satellite is re-grouped package and sent.
The intelligent differential data screening technique of above-mentioned reservation given amount of data, wherein, the satellite number is 4.
The inventive method is effectively solved because differential data amount is excessive, caused differential data transmission abnormal problem.With
Family can flexibly set suitable differential data output quantity very much as needed, code will automatic screening differential data, directly
Untill data volume is qualified.And which is compared with the mode of traditional maximum height limit angle of cut-off, with the obvious advantage, after screening
Differential data better quality, it is higher to resolve positional precision.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, the present invention and its feature, outside
Shape and advantage will become more apparent upon.The identical mark instruction identical part in whole accompanying drawings.Not deliberately proportionally
Draw accompanying drawing, it is preferred that emphasis is the purport of the present invention is shown.
Fig. 1 is a kind of flow chart of intelligent differential data screening technique for retaining given amount of data provided by the invention.
Embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Explain technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, this
Invention can also have other embodiment.
The invention provides it is a kind of retain given amount of data intelligent differential data screening technique, shown in reference picture 1, including
Following steps：
Step S1, the inventive method using low clearance angle of cut-off set, first cache all differential datas, then proceed into
Row following steps；
Step S2, the signal to noise ratio of every satellite in differential data is solved, these satellites are pressed signal to noise ratio from low to high again
Sequence；
Step S3, that minimum satellite of signal to noise ratio is deleted, and checks that the satellite system belonging to this satellite is remaining and defends
Whether star is less than default satellite number, if being less than, deletes the satellite system residue satellite；
Step S4, data volume is recalculated, is contrasted with target data amount, if data volume is still above target data amount
Repeat step S3；
Step S4, remaining satellite is re-grouped package and sent.
In an optional embodiment of the invention, retain the intelligent differential data screening technique of given amount of data, its feature
It is, the satellite number is 4.
This strategy that differential data is screened according to signal to noise ratio provided by the invention should be a kind of best method, the later stage
Optimization may continue to introduce some other reference quantity Integrated Selections on the basis of signal to noise ratio this reference quantity, such as to not
Different weights is added with satellite system, or be will not be described here according to satellite distribution situation come Integrated Selection etc..
The inventive method is effectively solved because differential data amount is excessive, caused differential data transmission abnormal problem.With
Family can flexibly set suitable differential data output quantity very much as needed, code will automatic screening differential data, directly
Untill data volume is qualified.And which is compared with the mode of traditional maximum height limit angle of cut-off, with the obvious advantage, after screening
Differential data better quality, it is higher to resolve positional precision.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this has no effect on the substantive content of the present invention.Therefore, every content without departing from technical solution of the present invention, foundation
The technical spirit of the present invention still falls within the present invention to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of technical scheme protection.
Claims (2)
1. a kind of intelligent differential data screening technique for retaining given amount of data, it is characterised in that comprise the following steps：
Step S1, all differential datas are first cached；
Step S2, the signal to noise ratio of every satellite in differential data is solved, these satellites are resequenced from low to high by signal to noise ratio；
Step S3, that minimum satellite of signal to noise ratio is deleted, and checks that the remaining satellite of satellite system belonging to this satellite is
It is no to be less than default satellite number, if being less than, delete the satellite system residue satellite；
Step S4, data volume is recalculated, contrasts with target data amount, is repeated if data volume is still above target data amount
Step S3；
Step S4, remaining satellite is re-grouped package and sent.
2. retain the intelligent differential data screening technique of given amount of data as claimed in claim 1, it is characterised in that described to defend
Star number is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863658.4A CN107884794A (en) | 2016-09-29 | 2016-09-29 | A kind of intelligent differential data screening technique for retaining given amount of data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863658.4A CN107884794A (en) | 2016-09-29 | 2016-09-29 | A kind of intelligent differential data screening technique for retaining given amount of data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884794A true CN107884794A (en) | 2018-04-06 |
Family
ID=61769444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610863658.4A Pending CN107884794A (en) | 2016-09-29 | 2016-09-29 | A kind of intelligent differential data screening technique for retaining given amount of data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884794A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213740A (en) * | 2020-08-28 | 2021-01-12 | 广州南方卫星导航仪器有限公司 | Method, device and medium for reducing differential data transmission load based on RTK (real time kinematic) reference station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150351A (en) * | 2007-11-08 | 2008-03-26 | 上海伽利略导航有限公司 | A method and device for obtaining receiver location under mixed satellite mode |
| US20130050018A1 (en) * | 2011-08-30 | 2013-02-28 | Electronics And Telecommunications Research Institute | Gps receiver and calculation method of navigation solution thereof |
| DE102012216211A1 (en) * | 2011-09-12 | 2013-03-14 | Continental Teves Ag & Co. Ohg | Method for selecting a satellite |
| CN104931981A (en) * | 2015-05-11 | 2015-09-23 | 中国科学院光电研究院 | GNSS anti-multipath satellite selecting method based on signal to noise ratio fluctuation information |
| CN105158773A (en) * | 2015-07-06 | 2015-12-16 | 北京航天长征飞行器研究所 | Multi-beam directional anti-interference processing method for satellite navigation reception system |
-
2016
- 2016-09-29 CN CN201610863658.4A patent/CN107884794A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150351A (en) * | 2007-11-08 | 2008-03-26 | 上海伽利略导航有限公司 | A method and device for obtaining receiver location under mixed satellite mode |
| US20130050018A1 (en) * | 2011-08-30 | 2013-02-28 | Electronics And Telecommunications Research Institute | Gps receiver and calculation method of navigation solution thereof |
| DE102012216211A1 (en) * | 2011-09-12 | 2013-03-14 | Continental Teves Ag & Co. Ohg | Method for selecting a satellite |
| CN104931981A (en) * | 2015-05-11 | 2015-09-23 | 中国科学院光电研究院 | GNSS anti-multipath satellite selecting method based on signal to noise ratio fluctuation information |
| CN105158773A (en) * | 2015-07-06 | 2015-12-16 | 北京航天长征飞行器研究所 | Multi-beam directional anti-interference processing method for satellite navigation reception system |
Non-Patent Citations (2)
| Title |
|---|
| 李耀军 等: "基于单天线GPS载波幅度的旋转载体滚转角测量", 《火控雷达技术》, 25 September 2014 (2014-09-25), pages 6 - 12 * |
| 费攀: "三系统导航接收机信息处理技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》, 15 August 2013 (2013-08-15), pages 40 - 42 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213740A (en) * | 2020-08-28 | 2021-01-12 | 广州南方卫星导航仪器有限公司 | Method, device and medium for reducing differential data transmission load based on RTK (real time kinematic) reference station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Veronig et al. | Hemispheric sunspot numbers 1874–2020 | |
| Smolčić et al. | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release | |
| Gubler et al. | The influence of station density on climate data homogenization | |
| Michalcová et al. | Bias in vegetation databases? A comparison of stratified‐random and preferential sampling | |
| Berdyugin et al. | Interstellar polarization at high galactic latitudes from distant stars-VIII. Patterns related to the local dust and gas shells from observations of~ 3600 stars | |
| Neige | Spatial patterns of disparity and diversity of the Recent cuttlefishes (Cephalopoda) across the Old World | |
| CN104483705B (en) | A kind of three-dimensional residual static corrections | |
| CN104182974B (en) | A speeded up method of executing image matching based on feature points | |
| CN106021336A (en) | A method for automatic administrative district division for mass address information | |
| CN109145003B (en) | Method and device for constructing knowledge graph | |
| US9329878B2 (en) | Apparatus and method for providing virtual API for mashup service | |
| CN108920476A (en) | Map retrieval calculates pass and holds up test macro and its test method | |
| Yesuf et al. | Assessing regional‐scale variability in deforestation and forest degradation rates in a tropical biodiversity hotspot | |
| CN107884794A (en) | A kind of intelligent differential data screening technique for retaining given amount of data | |
| CN103823854A (en) | Method for reducing data volumes of electronic maps of navigation terminals on basis of land boundary line indexes | |
| Noguera-Urbano et al. | The Neotropical region sensu the areas of endemism of terrestrial mammals | |
| CN106202017A (en) | Fill in the method and device of list | |
| CN113806601A (en) | Peripheral interest point retrieval method and storage medium | |
| Fliri et al. | The wendelstein calar alto pixellensing project (WeCAPP): The M 31 variable star catalogue | |
| CN109697693B (en) | Method for realizing operation based on big data space | |
| CN108931792A (en) | A kind of method of loop parameter dynamic weighting | |
| CN104656126B (en) | A kind of method generating seismic observation system | |
| CN106772596A (en) | A kind of method and device for determining pre-stack time migration velocity field | |
| Yılmaz et al. | Scale‐dependent intraspecific competition of Taurus cedar (Cedrus libani A. Rich.) saplings in the Southern Turkey | |
| CN112785963A (en) | LED lamp bead positioning method and device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |