CN114826417A - Transmitting terminal, receiving terminal and sharing method for cluster one-to-many information sharing - Google Patents

Abstract

The invention provides a transmitter, a receiver and a sharing method for clustering one-to-many information sharing. The transmitter is installed on the main aircraft and is used for converting real-time to-be-shared information into digital codes; constructing a polarized light field, The digital code is loaded into the polarized light field to form an encoded polarized light field covering the area where the slave aircraft group is located, and the real-time change of the polarization state of the polarized light field is used to transmit real-time information to be shared, and implement a pair of other slave aircraft groups. Multi-information sharing; the receiving end is installed on the slave aircraft, and is used to determine the real-time polarization state of the polarized light field in the area where the slave aircraft is located when the slave aircraft is in the encoded polarized light field constructed and emitted by the transmitting end of the master aircraft Change, and then obtain the transmission information of the main aircraft, and realize one-to-many information sharing with the main aircraft. The invention solves the problem of one-to-many information sharing of cluster aircraft, and solves the problem of adaptability of information sharing among cluster aircraft to electromagnetic interference.

Description

Transmitter, receiver and sharing method for cluster one-to-many information sharing

technical field

The invention belongs to the field of space weapon equipment system system group game confrontation, relates to a transmitter, a receiver and a sharing method for cluster one-to-many information sharing, and is mainly used for solving the one-to-many information sharing of cluster aircraft in a strong electromagnetic interference environment problem.

Background technique

With the development of modern warfare in the direction of informatization and intelligence, in order to achieve stronger concealment effect and anti-interference effect, the mechanism and method of research group tacit coordination under the condition of communication denial are proposed. When traditional aircraft swarms carry out coordinated strikes, it is necessary to obtain location information, allocate and coordinate strike targets through communication between the ground and the aircraft or between aircraft. Therefore, it is necessary to develop the technology to realize position awareness and coordination between aircrafts under the condition of communication denial to provide support for the overall project.

SUMMARY OF THE INVENTION

The object of the present invention is to solve the following at least one technical problem:

(1) Solve the problem of one-to-many (N≥10~100) information sharing of cluster aircraft, that is, to solve the problem that conventional laser communication of cluster aircraft can only be one-to-one and point-to-point communication;

(2) Solve the problem of adaptability of information sharing among swarm aircraft to electromagnetic interference.

The technical scheme provided by the present invention is as follows:

In the first aspect, a transmitting end for optical one-to-many information sharing of cluster aircraft based on a polarized light field, the transmitting end is installed on the main aircraft and is used to convert real-time information to be shared into digital codes;

The transmitting end is used to construct a polarized light field, and load the digital code into the polarized light field to form an encoded polarized light field. The encoded polarized light field covers the area where the slave aircraft group is located. Changes deliver real-time information to be shared, and implement one-to-many information sharing to other slave aircraft groups.

In a second aspect, a receiving end for optical one-to-many information sharing of cluster aircraft based on a polarized light field is provided. When the light field is in the light field, the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located is determined, and then the transmission information of the master aircraft is obtained, and the one-to-many information sharing with the master aircraft is realized.

A third aspect provides an optical one-to-many information sharing method for a cluster aircraft based on a polarized light field, comprising: converting the real-time to-be-shared information into a digital code at a transmitter of a main aircraft;

The transmitting end of the main aircraft constructs a polarized light field, and loads the digital code into the polarized light field to form an encoded polarized light field, and the encoded polarized light field covers the area where the slave aircraft group is located;

The real-time change of the polarization state of the polarized light field is used to transmit real-time information to be shared, so as to realize one-to-many information sharing with other slave aircraft groups.

A fourth aspect provides an optical one-to-many information sharing method for a cluster aircraft based on a polarized light field, comprising: determining a polarized light from an area where the aircraft is located in an encoded polarized light field constructed and emitted by a transmitter of a main aircraft. The real-time change of the field polarization state, and then the transmission information of the main aircraft is obtained, and the one-to-many information sharing with the main aircraft is realized; wherein, the step of determining the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located is implemented in the following ways:

The polarized light field is collected and converged by the focusing lens group, and the polarized light field is filtered by the band-pass filter to remove the stray light; the incident polarized light after the band-pass filter is filtered by a quarter-wave plate, and the polarized beam splitter is used to filter the incident polarized light. Divide the filtered polarized light into two vertical linearly polarized lights, one beam is transmitted to the first polarizer and then enters the first detector, and the light intensity S1 entering the first detector is measured, and the other beam is transmitted to the second polarized light. After the film, it enters the second detector, measures the light intensity S2 entering the second detector, obtains the polarization state of the polarized light field in the region received by the receiving end through the light intensity S1 and light intensity S2, and then obtains the polarized light field from the region where the aircraft is located. Real-time change of polarization state.

A transmitter, a receiver and a sharing method for clustering one-to-many information sharing provided by the present invention have the following beneficial effects:

(1) The present invention provides a transmitter, a receiver and a sharing method for cluster one-to-many information sharing, which solves the problem of ordinary laser communication point-to-point communication and cannot realize fast inter-group communication, and realizes information sharing between clusters at the speed of light , greatly improving the cluster communication efficiency.

(2) The present invention provides a transmitter, a receiver and a sharing method for cluster one-to-many information sharing, which solves the problems of high stability requirements and narrow coverage of laser communication point-to-point communication, and can also solve the problem of cluster aircraft The problem of poor adaptability of wireless communication to electromagnetic interference has significantly improved the reliability of the group of aircraft in a strong electromagnetic interference environment.

Description of drawings

1 is a flow chart of a method for optical one-to-many information sharing of cluster aircraft based on a polarized light field provided by the present invention;

Fig. 2 is the structural composition schematic diagram of the main aircraft transmitting end provided by the present invention;

FIG. 3 is a schematic diagram of the structural composition of the receiving end of the slave aircraft provided by the present invention.

Detailed ways

The features and advantages of the present invention will become clearer and clearer through the detailed description of the present invention below.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

An optical one-to-many information sharing method for cluster aircraft based on polarized light field is provided, as shown in Figure 1, including:

(1) The transmitter of the main aircraft converts the real-time information to be shared into digital codes.

In this step, the real-time information to be shared includes the latitude and longitude of the strike location, strike direction, target type, and the like.

The method for converting real-time information to be shared into digital encoding includes but not limited to ASCII encoding; it is used to convert various types of real-time information to be shared into binary digital encoding information.

(2) The transmitting end of the main aircraft constructs a polarized light field, and loads the digital code into the polarized light field to form an encoded polarized light field, and the encoded polarized light field covers the area where the slave aircraft group is located.

In this step, the transmitting end of the main aircraft constructs a polarized light field (with a diameter of more than 100km), and loads the digital code into the polarized light field to form the encoded polarized light field, which is specifically implemented in the following manner:

The infrared laser at the transmitting end of the main aircraft emits infrared light through a beam expander composed of a zoom lens for beam expansion, so that the beam can cover the entire modulation area of the polarization encoder. Add a polarizer (Figure 2) between the beam expander and the polarization encoder (divided into X axis and Y axis), so that the light passing direction of the polarizer is at a 45° angle with the X axis of the polarization encoder, so as to realize X-Y two The two orthogonal directions have the same vibration intensity, which is convenient for the polarization encoder to perform polarization modulation. Input the digital code into the polarization encoder to realize the spatial polarization encoding of the outgoing polarized light field. Finally, the spatially polarized light is emitted through the beam-expanding emitting end composed of the zoom lens.

During the entire emission process, a spatial light modulator (SLM) is used as a polarization encoder to realize real-time dynamic adjustment of the polarization light field, which can form a large-scale light field coverage in space, and can simultaneously form multiple groups within the light field range. Information Sharing.

Further, the diameter of the coverage area of the polarized light field is:

Among them, R—the diameter of the coverage area of the polarized light field, P _l —the transmit power of the laser, t _l —transmittance of the optical system at the transmitting end, t _a —the transmittance of the atmosphere, t _r —the transmittance of the optical system at the receiving end, β - The half angle of the light field divergence, Dr - the effective aperture of the optical receiving end, ξ - engineering correction coefficient, D* - specific detection rate, SNR - signal-to-noise ratio, A _D - pixel photosensitive area of the detector, Δf - detector bandwidth.

Further, when the output power of the laser is greater than or equal to 2W, the distance of the light field is not less than 100km, and the diameter of the coverage area of the polarized light field is not less than 80km.

(3) The real-time change of the polarization state of the polarized light field in the region is received from the receiver on the aircraft.

In this step, as shown in FIG. 3 , the receiving end includes a signal collection system and a polarization decoding system, the signal collection system includes a focusing lens group and a bandpass filter arranged in front and back, and the focusing lens group is used for polarization Collection and convergence of the light field, the bandpass filter is used for filtering the polarized light field to remove stray light;

The polarization decoding system includes a quarter wave plate, a polarization beam splitter, a polarizer 1 (ie a first polarizer), a detector 1 (ie a first detector), and a polarizer 2 (ie a second polarizer) and detector 2 (ie the second detector), the quarter wave plate is used to filter the incident polarized light after the bandpass filter, and the polarized beam splitter is used to divide the filtered polarized light into two vertical beams The linearly polarized light, one beam enters the detector 1 after entering the polarizer 1, which is used to measure the light intensity S1 entering the detector 1, and the other beam enters the detector 2 after entering the polarizer 2, which is used for measuring the entering detector. The light intensity S2 of 2, the polarization state of the polarized light field in the region received by the receiving end is obtained by the light intensity S1 and the light intensity S2.

(4) Obtain the transmission information of the master aircraft from the aircraft receiver, and finally realize one-to-many information sharing with other slave aircraft groups.

A one-to-many information sharing method specially based on polarized light field proposed by the present invention is to realize the differential coding of different regions in the light field by using the polarization characteristics of optics on a large-scale light field, and at the same time use the different polarizations in the optical characteristics State loading realizes information encoding, which can solve the problems of high stability requirements and narrow coverage of laser communication point-to-point communication, that is, it can realize one-to-many simultaneous sharing of information, and has strong adaptability to electromagnetic interference environment. The difficulty of interception is greatly increased, and the reliability of the group aircraft is significantly improved. The information sharing speed reaches the speed of light, and the information sharing target is no less than 10 to 100.

The invention provides a transmitting end for optical one-to-many information sharing of cluster aircraft based on a polarized light field. The transmitting end is installed on the main aircraft and is used for converting real-time information to be shared into digital codes;

The transmitting end is used to construct a polarized light field, and load the digital code into the polarized light field to form an encoded polarized light field. The encoded polarized light field covers the area where the slave aircraft group is located. Changes deliver real-time information to be shared, and implement one-to-many information sharing to other slave aircraft groups.

As shown in Figure 2, the transmitting end of the main aircraft includes an infrared laser, a beam expander, a polarizer, a polarization encoder and a beam expanding transmitting end; the infrared laser is used to emit infrared light; the infrared light passes through a beam expander composed of a zoom lens Carry out beam expansion so that the beam can cover the entire modulation area of the polarization encoder; the polarizer is located between the beam expander and the polarization encoder, so that the light passing direction of the polarizer is at an angle of 45° with the X axis of the polarization encoder, In order to realize that the two orthogonal directions of X-Y have the same vibration intensity, it is convenient for the polarization encoder to perform polarization modulation; the polarization encoder is input with a digital code, which is used to implement the spatial polarization encoding of the outgoing polarized light field; the beam-expanding transmitting end It is composed of a zoom lens and is used to emit spatially polarized light to form an encoded polarized light field.

The present invention also provides a receiving end for optical one-to-many information sharing of cluster aircraft based on a polarized light field. When the polarized light field is in the polarized light field, the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located is determined, and then the transmission information of the main aircraft is obtained, and the one-to-many information sharing with the main aircraft is realized.

As shown in FIG. 3 , the receiving end of the slave aircraft includes: a signal collection system and a polarization decoding system. The signal collection system includes a focusing lens group and a band-pass filter arranged in front and back. The focusing lens group is used for polarized light field. Collection and convergence, the bandpass filter is used for filtering the polarized light field to remove stray light;

The polarization decoding system includes a quarter-wave plate, a polarization beam splitter, a polarizer 1, a detector 1, a polarizer 2, and a detector 2, and the quarter-wave plate is used to screen the incident signal after the bandpass filter. Polarized light, the polarized beam splitter is used to divide the filtered polarized light into two vertical linearly polarized lights, one of which is transmitted to the polarizer 1 and then enters the detector 1 to measure the light intensity entering the detector 1 S1, another beam enters into the detector 2 after entering the polarizer 2, and is used to measure the light intensity S2 entering the detector 2, and obtain the polarization state of the polarized light field in the region received by the receiving end through the light intensity S1 and the light intensity S2.

Using the transmitting end, the receiving end and the information sharing method provided by the present invention, digital prototype design, principle prototype design, digital simulation test and ground verification test are completed. Test conditions, the laser power is much lower than the design value), the receiving end can receive polarized light fields of different polarization states at a distance of 65m, and the diameter of the coverage area of the polarized light field is greater than 10m (the actual light field coverage area is larger, This ground test is limited by the existing test conditions, and the accuracy of the receiving detector is low. If a 2W laser is used, the distance of the light field in the thin atmosphere is not less than 100km, and the diameter of the coverage area of the polarized light field is not less than 80km); Smoke has carried out interference experiments, and the cluster one-to-many information sharing technology based on polarized light field has stronger adaptability to complex environments than ordinary optical communication.

The present invention has been described in detail above in conjunction with specific embodiments and exemplary examples, but these descriptions should not be construed as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, various equivalent replacements, modifications or improvements can be made to the technical solutions of the present invention and the embodiments thereof, which all fall within the scope of the present invention. The scope of protection of the present invention is determined by the appended claims.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (10)

1. a transmitting terminal based on the optical one-to-many information sharing of the cluster aircraft of polarized light field, it is characterized in that, this transmitting terminal is installed on the main aircraft, for the real-time information to be shared is converted into digital code; The transmitting end is used to construct a polarized light field, and load the digital code into the polarized light field to form an encoded polarized light field. The encoded polarized light field covers the area where the slave aircraft group is located. Changes deliver real-time information to be shared, and implement one-to-many information sharing to other slave aircraft groups. 2 . The transmitting end for optical one-to-many information sharing of cluster aircraft based on a polarized light field according to claim 1 , wherein the transmitting end of the main aircraft comprises an infrared laser, a beam expander, a polarizer, a polarizer, and a polarizer. 3 . Encoder and beam expander transmitter; The infrared laser is used to emit infrared light; The beam expander is composed of a zoom lens, and is used to expand the infrared light, so that the beam can cover the entire modulation area of the polarization encoder; The polarizer is located in the middle of the beam expander and the polarization encoder, so that the light passing direction of the polarizer forms an angle of 45° with the X axis of the polarization encoder, so as to realize that the two orthogonal directions of X-Y have the same vibration intensity; A digital code is input in the polarization encoder for implementing spatial polarization encoding of the outgoing polarized light field; The beam-expanding emitting end is composed of a zoom lens, and is used for emitting spatially polarized light to form an encoded polarized light field. 3 . The transmitting end for optical one-to-many information sharing of cluster aircraft based on a polarized light field according to claim 2 , wherein the polarization encoder adopts a spatial light modulator. 4 . 4. A receiving end for optical one-to-many information sharing of cluster aircraft based on polarized light field, it is characterized in that, the receiving end is installed on the slave aircraft, and is used for after the slave aircraft is in the main aircraft transmitting end to construct and transmit after encoding. When it is in the polarized light field, the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located is determined, and then the transmission information of the main aircraft is obtained, and the one-to-many information sharing with the main aircraft is realized. 5. The receiving end for optical one-to-many information sharing of cluster aircraft based on a polarized light field according to claim 4, wherein the slave aircraft receiving end comprises a signal collection system and a polarization decoding system; The signal collection system includes a focusing lens group and a band-pass filter arranged in front and back. The focusing lens group is used for collecting and converging the polarized light field, and the band-pass filter is used for filtering the polarized light field and removing stray light. ; The polarization decoding system includes a quarter wave plate, a polarization beam splitter, a first polarizer, a first detector, a second polarizer and a second detector, and the quarter wave plate is used for screening bandpass filtering The polarized light incident after the filter, the polarized beam splitter is used to divide the filtered polarized light into two vertical linearly polarized lights, one of which is transmitted to the first polarizer and then enters the first detector for measuring the incoming The light intensity S1 of the first detector, the other beam enters the second detector after entering the second polarizer, and is used to measure the light intensity S2 entering the second detector. The polarization state of the polarized light field in the region where the . 6. An optical one-to-many information sharing method for cluster aircraft based on polarized light field, characterized in that, comprising: the main aircraft transmitting end converts the real-time information to be shared into digital codes; The transmitting end of the main aircraft constructs a polarized light field, and loads the digital code into the polarized light field to form an encoded polarized light field, and the encoded polarized light field covers the area where the slave aircraft group is located; The real-time change of the polarization state of the polarized light field is used to transmit real-time information to be shared, so as to realize one-to-many information sharing with other slave aircraft groups. 7 . The optical one-to-many information sharing method for cluster aircraft based on a polarized light field according to claim 6 , wherein the transmitting end of the main aircraft constructs a polarized light field, and loads digital codes into the polarized light field. 8 . , the step of forming the encoded polarized light field is specifically implemented in the following manner: The infrared laser at the transmitting end of the main aircraft emits infrared light through a beam expander composed of a zoom lens for beam expansion, so that the beam can cover the entire modulation area of the polarization encoder; a polarizer is added between the beam expander and the polarization encoder to make the polarizer The light passing direction is at a 45° angle with the X-axis of the polarization encoder, so that the X-axis and Y-axis of the polarization encoder have the same vibration intensity; The field is encoded by spatial polarization, and finally the spatially polarized light is emitted through the beam-expanding emitting end composed of a zoom lens. 8. A kind of optical one-to-many information sharing method for cluster aircraft based on polarized light field according to claim 7, it is characterized in that, the diameter of polarized light field coverage area is:

Among them, R—the maximum distance between the aircrafts from the aircraft group, P _l —the transmit power of the laser, t _l —the transmittance of the optical system at the transmitting end, t _a —the transmittance of the atmosphere, t _r —the transmittance of the optical system at the receiving end rate, β—half angle of light field divergence, Dr—effective aperture of optical receiving end, ξ—engineering correction coefficient, D*—detection ratio, SNR—signal-to-noise ratio, A _D —pixel photosensitive area of detector, Δf—detection device bandwidth. 9 . The optical one-to-many information sharing method for cluster aircraft based on a polarized light field according to claim 7 , wherein when the output power of the laser is greater than or equal to 2W, the light field distance is not less than 100km, and the polarized light field The diameter of the coverage area is not less than 80km. 10. An optical one-to-many information sharing method for cluster aircraft based on a polarized light field, characterized in that it comprises: the slave aircraft is in the encoded polarized light field constructed and emitted by the transmitting end of the main aircraft, and determining the area where the slave aircraft is located. The real-time change of the polarization state of the polarized light field, thereby obtaining the transmission information of the main aircraft, and realizing one-to-many information sharing with the main aircraft; wherein, the steps of determining the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located are as follows. Implementation: The polarized light field is collected and converged by the focusing lens group, and the polarized light field is filtered by the band-pass filter to remove the stray light; the incident polarized light after the band-pass filter is filtered by a quarter-wave plate, and the polarized beam splitter is used to filter the incident polarized light. Divide the filtered polarized light into two vertical linearly polarized lights, one beam is transmitted to the first polarizer and then enters the first detector, and the light intensity S1 entering the first detector is measured, and the other beam is transmitted to the second polarized light. After the film, it enters the second detector, measures the light intensity S2 entering the second detector, obtains the polarization state of the polarized light field in the region received by the receiving end through the light intensity S1 and light intensity S2, and then obtains the polarized light field from the region where the aircraft is located. Real-time change of polarization state.

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