JP3665308B2 - Laser transmission device for identifying allies - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to IFF laser transmission equipment for irradiating and receiving the IFF information optically in space by the laser beam.
[0002]
[Prior art]
The laser transmitter for shooting aiming at night is not used for purposes other than the aiming function. It was necessary to provide a laser transmitter equipped with an enemy friendly identification code using a wavelength band different from that of the device.
[0003]
In the case of the conventional method described above, it is necessary to attach the aiming laser transmitter and the enemy friendly laser transmitter individually to one gun, and the shooting structure is deteriorated by the transmitter structure, and the shooting performance and mobility due to the increase in the structure mass Deterioration of battery performance, increase in battery size due to increase in power consumption, deterioration in economic efficiency (apparatus procurement), and the like.
[0004]
In the case of the conventional coded pulse method, the laser safety (eye-safe condition) is impaired depending on the number of bits of the code information. As a result, the laser transmission time and the laser transmission power are greatly restricted in order to ensure safety, and a great restriction is imposed on operations such as shooting accuracy.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and it is possible to simultaneously perform a shooting target aiming and an enemy ally identification, not only avoiding the risk of ally misfire, but also ease of action, operation other sex, an object of the present invention is to provide a laser transmission equipment for the IFF can be expected the effect of the economy at the time of product procurement.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an enemy / friend identification laser transmitter according to the present invention includes an enemy / friend identification code generation circuit that generates a pulse in which enemy identification information is encoded, an aiming beam generation circuit that generates an aiming pulse, and A laser driving circuit for generating a laser driving signal obtained by modulating the aiming pulse generated by the aiming beam generating circuit with the enemy friendly identification code coding pulse generated by the enemy friendly identification code generating circuit; and the laser driving circuit And a laser device that is driven by the generated laser drive signal and emits an enemy friend identifying laser beam and an aiming laser beam.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0009]
FIG. 1 is a configuration explanatory view showing a laser transmitting apparatus for identifying a friendly ally according to an embodiment of the present invention. In the figure, 11 is an enemy friendly identification code generation circuit, 12 is an aiming beam generation circuit, 13 is a laser drive circuit, 14 is a laser device comprising a laser diode (LD) 141 and an optical system 142, 15 is a remote switch, and 16 is a battery. It is.
[0010]
That is, when the remote switch 15 is turned on, the enemy team identification code generation circuit 11 generates a pulse in which the enemy team identification information is encoded and outputs it to the laser drive circuit 13, and the aiming beam generation circuit 12 uses the aiming pulse. Is output to the laser drive circuit 13. The laser drive circuit 13 generates a laser drive signal obtained by modulating the aiming pulse generated by the aiming beam generation circuit 12 with the enemy friendly identification code generation pulse generated by the enemy friendly identification code generation circuit 11 and outputs the laser drive signal to the laser device 14. To do. The laser device 14 is driven by a laser drive signal generated by the laser drive circuit 13 and simultaneously emits an enemy friendly laser beam and an aiming laser beam. The laser beam emitted from the laser device 14 is aimed at the enemy target, and at the same time irradiates an enemy ally identification code.
[0011]
FIG. 2A is a configuration explanatory view showing the laser device of FIG. 1, and FIG. 2B is an enlarged view showing a portion A of FIG. 2A. In the figure, 21 is a laser diode as an example of a laser light source, 22 is a convex lens (for example, a plano-convex lens) with an antireflection coating, 23 is a concave lens without an antireflection coating (or with a reflective film), and 24 is a long distance. A sighting laser beam 25 is a short-distance enemy ally identifying laser beam.
[0012]
That is, a convex lens 22 with an antireflection coating is disposed in front of a laser diode 21 serving as a laser light source, and a concave lens 23 without an antireflection coating (or with a reflection film) is disposed in front of the convex lens 22. Set up.
[0013]
The laser beam generated from the laser diode 21 is incident on a convex lens 22 having an antireflection coating. The laser beam transmitted through the convex lens 22 is incident on a concave lens 23 without an antireflection coating. The laser beam transmitted through the concave lens 23 forms an aiming laser beam 24 suitable for a long distance with a narrow beam width, and the laser beam reflected by the concave lens 23 is a laser beam for identifying an ally suitable for a short distance with a wide beam width. 25 is formed.
[0014]
FIG. 3 is a characteristic diagram showing an example of a detection range simulation of a laser beam emitted from the laser apparatus of FIG. In the figure, 31 is a detection range of the enemy-friendly laser beam 25 suitable for a short distance with a wide beam width, and 32 is a detection range of the aiming laser beam 24 suitable for a long distance with a narrow beam width.
[0015]
FIG. 4 is a waveform diagram showing an example of a laser-modulated laser transmission pulse train emitted from the laser apparatus of FIG. In the figure, reference numeral 41 is an enemy friendly laser beam, 42 is an aiming laser beam, and 43 is a threshold level.
[0016]
FIG. 5 is a timing chart of the demodulated laser transmission pulse of the laser transmission pulse train of FIG. In the figure, T ₁ , T ₂ , T ₃ , and T ₄ are pulse time intervals.
[0017]
FIG. 6 is an explanatory diagram showing a configuration of a laser receiving apparatus for identifying a friendly ally according to an embodiment of the present invention. In the figure, 61 is a laser receiver, 62 is a code decoder, 63 is a light emitter, 64 is a radio, 65 is a buzzer, and 66 is an operation switch. The laser receiver 61 includes a laser receiver 67, an amplifier 68, a comparator 69, and a battery 70.
[0018]
That is, in the laser receiver 61, an enemy and friend identification laser beam composed of pulses encoded with the enemy and friend identification information is received by the laser receiver 67 and output to the code decoder 62 through the amplifier 68 and the comparator 69. . The code decoder 62 checks the coincidence between the enemy friendly identification code and the friendly code information of the enemy friendly laser beam received by the laser receiver 61, and causes the light emitter 63 to emit light when the code information matches. The light emitter 63 is for receiving the laser and notifying the other party that it is a friend. The buzzer 65 is for notifying the operator that the laser has been received. The radio 64 is for receiving the received information. This is to communicate to the operator. The wireless device 64 can use a public line through a mobile phone network or a wireless network having a unique frequency band. Even when the wireless system is disconnected due to the influence of the radio wave environment or the like, the risk of misfiring can be immediately avoided because the light emitter 63 can instantly recognize the shooter. Whether the light emitter 63 emits light and whether the buzzer 65 rings can be turned on / off by the operation switch 66 according to the operation.
[0019]
FIG. 7 is an explanatory diagram showing the structure of an example of the code decoder shown in FIG. In the figure, 71 is a shift register, 72 is a code filter composed of an AND circuit, 73 is a code key generation circuit, 74 is a comparator composed of an exclusive OR, 75 is a code key generation circuit for comparison, and 76 is a code key. A code determination circuit for confirming a match, 77 is an input abnormality determination circuit for confirming that all bits are not 1, and 78 is a data determination circuit for confirming a normal input and a code key match.
[0020]
FIG. 8 is a timing chart showing an example of the operation of the code decoder of FIG. 7, and shows the decoder output (when the code key matches) at the time of simultaneous reception. In this case, the code decoding range = T ₁ + T ₂ + T ₃ + T ₄ . That is, the code decoder 62 receives the code decoder input signal S3 from the laser receiver 61. The code decoder input signal S3 is a signal obtained by superimposing the output signal S1 from the shooter A's enemy ally identifying laser transmitter and the output signal S2 from the shooter B's enemy ally identifying laser transmitter. The code decoder input signal S3 input to the code decoder 62 is output to one input terminal of the code filter 72 via the shift register 71 and also output to the input abnormality determination circuit 77. The input abnormality determination circuit 77 outputs an input abnormality determination flag signal to the data determination circuit 78 when the code decoder input signal S3 is not all 1 bits. A code key output signal S4 is input from the code key generation circuit 73 to the other input terminal of the code filter 72, and a filter output signal S5 is output from the code filter 72 to one input terminal of the comparator 74. A comparison code key output signal S 6 is input from the comparison code key generation circuit 75 to the other input terminal of the comparator 74, and a comparison result output signal S 7 is output from the comparator 74 to the code determination circuit 76. When the code determination circuit 76 matches the code key, it outputs a code determination flag signal S8 to the data determination circuit 78. When the input is normal and the code key matches, the data determination circuit 78 outputs a data determination result output signal to the issuer 63 and the wireless device 64.
[0021]
FIG. 9 is a timing chart showing another example of the operation of the code decoder of FIG. 7, and shows the output of the decoder at the time of simultaneous reception (when the code key does not match). In this case, the code decoding range = T ₁ + T ₂ + T ₃ + T ₄ . That is, the code decoder 62 receives the code decoder input signal S3 ′ from the laser receiver 61. The code decoder input signal S3 'is a signal in which the output signal S1 from the shooter A's enemy ally identifying laser transmitter and the output signal S2' from the shooter B's enemy ally identifying laser transmitter are superimposed. The code decoder input signal S3 ′ input to the code decoder 62 is output to one input terminal of the code filter 72 via the shift register 71 and also output to the input abnormality determination circuit 77. The input abnormality determination circuit 77 outputs an input abnormality determination flag signal to the data determination circuit 78 when the code decoder input signal S3 ′ is not all 1 bits. A code key output signal S4 is input from the code key generation circuit 73 to the other input terminal of the code filter 72, and a filter output signal S5 'is output from the code filter 72 to one input terminal of the comparator 74. A comparison code key output signal S 6 is input from the comparison code key generation circuit 75 to the other input terminal of the comparator 74, and a comparison result output signal S 7 ′ is output from the comparator 74 to the code determination circuit 76. The code determination circuit 76 outputs a code determination flag signal S8 ′ to the data determination circuit 78 because it cannot be matched with the code key. Even if the input is normal, the data determination circuit 78 does not output the data determination result output signal to the light emitter 63 and the radio device 64 because the code keys do not match.
[0022]
FIG. 10 shows a specific embodiment of the present invention, where (a) is a perspective view seen from the front, and (b) is a view seen from the back. As shown in FIGS. 10 (a) and 10 (b), a laser receiver 61 and a light emitter 63 of an enemy friendly laser receiver are provided on the front of the fuselage, and an enemy friendly laser receiver is provided on the rear of the fuselage. A laser receiver 61, a light emitter 63, and a wireless device 64 are provided. Note that the code decoder, buzzer, operation switch, and the like of the laser receiving apparatus for identifying an enemy and ally are attached to personnel. In the figure, reference numeral 101 denotes a laser transmitting device for identifying an ally consisting of a laser device 14 and a remote switch 15 and the like, and 102 is a low-light night-vision device that can be seen with the naked eye even if it is invisible.
[0023]
In this embodiment, the aiming laser optical system and the enemy-friendly laser wavelength are set to the same band (only the aiming laser wavelength is used), and the two optical transmitters are combined into one by combining the optical systems. Aggregated. As a result, it is possible to improve the field of view due to the transmitter structure, the ease of shooting and mobility due to the increase in the mass of the device, the enlargement of the battery due to the increase in power consumption, and the deterioration of economy (device procurement).
[0024]
Further, according to the present embodiment, it is possible to compress the number of transmission information transmission pulses by providing code information corresponding to the laser pulse interval. In addition, when laser signals are simultaneously received by a single person from a plurality of persons, simultaneous demodulation and separation processing can be performed by an optimal demodulation processing algorithm corresponding to the modulation method.
[0025]
According to the present embodiment example, it is possible to simultaneously perform the aiming laser beam and the enemy ally identification at the time of night battle, not only avoiding the risk of ally misfiring, but also the ease of action and operability, Economic effect at the time of product procurement can be expected.
[0026]
Therefore, it is suitable as a shooting target aiming and enemy ally identification device during night battle with an invisible laser.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to simultaneously perform the shooting target aiming and the enemy ally identification, and not only avoid the risk of misfire of the teammate but also the ease of action and operability. , it is possible to provide a laser transmission equipment for the IFF can be expected the effect of the economy at the time of product procurement.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a configuration of a laser transmitting apparatus for identifying a friendly ally according to an embodiment of the present invention.
2A is a configuration explanatory view showing the laser apparatus of FIG. 1, and FIG. 2B is an enlarged view showing a portion A of FIG.
3 is a characteristic diagram showing an example of a detection range simulation of a laser beam emitted from the laser apparatus of FIG. 1. FIG.
4 is a waveform diagram showing an example of a laser-modulated laser transmission pulse train emitted from the laser apparatus of FIG. 1. FIG.
5 is a timing chart of demodulated laser transmission pulses of the laser transmission pulse train of FIG.
FIG. 6 is an explanatory diagram showing a configuration of a laser receiving apparatus for identifying a friendly ally according to an embodiment of the present invention.
7 is a configuration explanatory diagram showing an example of a code decoder in FIG. 6. FIG.
8 is a timing chart showing an example of the operation of the code decoder of FIG.
9 is a timing chart showing another example of the operation of the code decoder of FIG.
10A and 10B are specific embodiments of the present invention, in which FIG. 10A is a perspective view seen from the front, and FIG. 10B is a view seen from the back.
[Explanation of symbols]
11 enemy friendly identification code generation circuit 12 aiming beam generation circuit 13 laser drive circuit 14 laser device 15 remote switch 61 laser receiver 62 code decoder 63 light emitter 64 radio device 65 buzzer 66 operation switch

Claims (1)

An enemy ally identification code generation circuit for generating a pulse encoding the enemy ally identification information;
An aiming beam generation circuit for generating an aiming pulse;
A laser drive circuit for generating a laser drive signal obtained by modulating the aiming pulse generated by the aiming beam generation circuit with the enemy-friendly identification code coded pulse generated by the enemy-friendly identification code generation circuit;
A laser device for identifying an ally, comprising: a laser device driven by a laser drive signal generated by the laser drive circuit and emitting a laser beam for identifying an ally and an aiming laser beam.

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