CN114826417A - Transmitting terminal, receiving terminal and sharing method for cluster one-to-many information sharing - Google Patents
Transmitting terminal, receiving terminal and sharing method for cluster one-to-many information sharing Download PDFInfo
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- CN114826417A CN114826417A CN202210253739.8A CN202210253739A CN114826417A CN 114826417 A CN114826417 A CN 114826417A CN 202210253739 A CN202210253739 A CN 202210253739A CN 114826417 A CN114826417 A CN 114826417A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/532—Polarisation modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/614—Coherent receivers comprising one or more polarization beam splitters, e.g. polarization multiplexed [PolMux] X-PSK coherent receivers, polarization diversity heterodyne coherent receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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Abstract
The invention provides a transmitting end, a receiving end and a sharing method for sharing one-to-many information of a cluster, wherein the transmitting end is arranged on a main aircraft and is used for converting real-time information to be shared into digital codes; constructing a polarized light field, loading digital codes into the polarized light field to form a coded polarized light field covering the area where the slave aircraft group is located, transmitting real-time information to be shared by utilizing the real-time change of the polarization state of the polarized light field, and sharing one-to-many information of other slave aircraft groups; the receiving end is installed on the slave aircraft and used for determining the real-time change of the polarization state of the polarized light field in the area where the slave aircraft is located when the slave aircraft is located in the coded polarized light field constructed and transmitted by the transmitting end of the master aircraft, so that the transmission information of the master aircraft is obtained, and one-to-many information sharing with the master aircraft is realized. The invention solves the problem of one-to-many information sharing of the cluster aircrafts and the problem of adaptability of information sharing among the cluster aircrafts to electromagnetic interference.
Description
Technical Field
The invention belongs to the field of group game countermeasure of an aerospace weapon equipment system, and relates to a transmitting end, a receiving end and a sharing method for sharing one-to-many information of a cluster, which are mainly used for solving the problem of sharing one-to-many information of a cluster aircraft in a strong electromagnetic interference environment.
Background
With the development of modern war towards informatization and intellectualization, in order to realize stronger hiding effect and anti-interference effect, the research on group tacit cooperative mechanism and method under the condition of communication rejection is provided. When the traditional aircraft cluster carries out cooperative attack, the acquisition of position information and the distribution and coordination of attack targets are realized through the communication between the ground and the aircraft or between the aircraft. Therefore, there is a need to develop a technology for realizing location sensing and coordination among aircrafts under the condition of communication rejection, and support is provided for the overall project.
Disclosure of Invention
The invention aims to solve at least one of the following technical problems:
(1) the problem of one-to-many (N is more than or equal to 10-100) information sharing of the cluster aircraft is solved, namely the problem that conventional laser communication of the cluster aircraft can only be one-to-one and point-to-point communication is solved;
(2) the problem of adaptability of information sharing among the cluster aircrafts to electromagnetic interference is solved.
The technical scheme provided by the invention is as follows:
in a first aspect, a polarized light field-based cluster aircraft optical one-to-many information sharing transmitting terminal is installed on a main aircraft and used for converting real-time information to be shared into digital codes;
the transmitting end is used for constructing a polarized light field and loading the digital code into the polarized light field to form the coded polarized light field, the coded polarized light field covers the area where the slave aircraft group is located, real-time information to be shared is transmitted by means of real-time change of the polarization state of the polarized light field, and one-to-many information sharing of other slave aircraft groups is implemented.
In a second aspect, the receiving end is installed on the slave aircraft and used for determining the real-time change of the polarization state of the polarized light field of the area where the slave aircraft is located when the slave aircraft is located in the encoded polarized light field constructed and emitted by the emitting end of the master aircraft, so that the transmission information of the master aircraft is obtained, and the one-to-many information sharing with the master aircraft is realized.
In a third aspect, a method for sharing one-to-many information of cluster aircraft optics based on a polarized light field comprises the following steps: the method comprises the steps that a main aircraft transmitting end converts real-time information to be shared into digital codes;
the method comprises the steps that a polarized light field is constructed at the transmitting end of a main aircraft, digital codes are loaded into the polarized light field to form a coded polarized light field, and the coded polarized light field covers the area where a slave aircraft group is located;
real-time information to be shared is transmitted by utilizing the real-time change of the polarization state of the polarization light field, and one-to-many information sharing of other slave aircraft groups is realized.
In a fourth aspect, a method for sharing one-to-many information of cluster aircraft optics based on a polarized light field comprises the following steps: the method comprises the steps that a slave aircraft is positioned in a coded polarized light field constructed and transmitted by a transmitting end of a main aircraft, the real-time change of the polarization state of the polarized light field of a region where the slave aircraft is positioned is determined, and then the transmission information of the main aircraft is obtained, so that one-to-many information sharing with the main aircraft is realized; the method comprises the following steps of determining real-time change of polarization state of a polarized light field in an area where an aircraft is located, and specifically comprises the following steps:
the polarized light field is collected and converged by a focusing lens group, and is filtered by a band-pass filter to remove stray light; the polarized light incident after the band-pass filter is screened by the quarter-wave plate, the polarized light after being screened is divided into two beams of vertical linearly polarized light by the polarization beam splitter, one beam enters a first detector after entering a first polaroid, the light intensity S1 of the first detector is measured, the other beam enters a second detector after entering a second polaroid, the light intensity S2 of the second detector is measured, the polarization state of the polarized light field in the area where the receiving end receives is obtained through the light intensity S1 and the light intensity S2, and then the real-time change of the polarization state of the polarized light field in the area where the aircraft is located is obtained.
The transmitting end, the receiving end and the sharing method for sharing the cluster one-to-many information have the following beneficial effects that:
(1) the transmitting end, the receiving end and the sharing method for sharing the one-to-many information of the clusters solve the problems that the point-to-point communication of common laser communication cannot realize rapid inter-cluster communication, realize the information sharing among the clusters at the light speed and greatly improve the cluster communication efficiency.
(2) The transmitting end, the receiving end and the sharing method for sharing the cluster one-to-many information solve the problems of high requirement on the stability of point-to-point communication and narrow coverage range of laser communication, can solve the problem of poor adaptability of wireless communication of the cluster aircraft to electromagnetic interference, and obviously improve the reliability of a cluster aircraft group in a strong electromagnetic interference environment.
Drawings
FIG. 1 is a flowchart of an optical one-to-many information sharing method for a cluster aircraft based on a polarized light field according to the present invention;
FIG. 2 is a schematic structural component view of a launch end of a host aircraft provided in accordance with the present invention;
fig. 3 is a schematic structural composition diagram of a slave aircraft receiving end provided by the invention.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
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 the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
A method for sharing one-to-many information of cluster aircraft optics based on polarized light fields is provided, as shown in FIG. 1, and comprises the following steps:
(1) and the transmitting end 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 longitude and latitude of the hitting position, the hitting direction, the target type and the like.
The method for converting the real-time information to be shared into digital codes includes but is not limited to ASCII codes; the method is used for converting various types of real-time information to be shared into binary digital coding information.
(2) And the transmitting end of the main aircraft constructs a polarized light field, and loads the digital code into the polarized light field to form a coded polarized light field, wherein the coded polarized light field covers the area where the slave aircraft group is located.
In this step, a polarized light field (the diameter exceeds 100km) is constructed at the transmitting end of the main aircraft, and the digital code is loaded into the polarized light field to form a coded polarized light field, which is implemented in the following way:
the infrared laser of the main aircraft transmitting end transmits infrared light and expands the beam through the beam expander formed by the zoom lens, so that the light beam can cover the modulation area of the whole polarization encoder. A polaroid (figure 2) is added between a beam expander and a polarization encoder (divided into an X axis and a Y axis), so that the light passing direction of the polaroid and the X axis of the polarization encoder form an angle of 45 degrees, the X-Y orthogonal directions have the same vibration intensity, and the polarization encoder is convenient to perform polarization modulation. And inputting the digital code into a polarization encoder to realize the space polarization encoding of the emergent polarized light field. And finally, emitting the space polarized light through a beam expanding emitting end formed by the zoom lens.
In the whole transmitting process, a Spatial Light Modulator (SLM) is used as a polarization encoder for realizing real-time dynamic adjustment of a polarized light field, large-scale light field coverage can be formed in space, and simultaneous information sharing of a plurality of groups in a light field range can be realized.
Further, the diameter of the polarized light field coverage area is:
wherein R is the diameter of the area covered by the polarized light field, P l Laser emission power, t l Transmission of the transmitting optical system, t a Atmospheric transmittance, t r -receiving end optical system transmittance, beta-half angle of divergence of light field, Dr-effective aperture of optical receiving end, ξ -engineering correction coefficient, D × specific detectivity, SNR-signal-to-noise ratio, a D -the pixel photosensitive area of the detector, Δ f-the detector bandwidth.
Further, when the output power of the laser is larger than or equal to 2W, the distance of the optical field is not less than 100km, and the diameter of the coverage area of the polarized optical field is not less than 80 km.
(3) And receiving the real-time change of the polarization state of the polarized light field of the region from a receiving end on the aircraft.
In this step, as shown in fig. 3, the receiving end includes a signal collecting system and a polarization decoding system, the signal collecting system includes a focusing lens group and a band pass filter, which are arranged in front and behind, 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 to remove stray light;
the polarization decoding system comprises a quarter-wave plate, a polarization beam splitter, a polarizing plate 1 (namely a first polarizing plate), a detector 1 (namely a first detector), a polarizing plate 2 (namely a second polarizing plate) and a detector 2 (namely a second detector), wherein the quarter-wave plate is used for screening polarized light incident after a band-pass filter, the polarization beam splitter is used for dividing the screened polarized light into two beams of vertical linearly polarized light, one beam enters the detector 1 after being transmitted into the polarizing plate 1 and is used for measuring light intensity S1 entering the detector 1, the other beam enters the detector 2 after being transmitted into the polarizing plate 2 and is used for measuring light intensity S2 entering the detector 2, and the polarization state of a polarized light field in the area where the receiving end receives is obtained through light intensity S1 and light intensity S2.
(4) The slave aircraft receiving end acquires the transmission information of the master aircraft, and finally one-to-many information sharing of other slave aircraft groups is achieved.
The invention provides a one-to-many information sharing method based on a polarized light field, which is characterized in that on a large light field, differential coding of different areas in the light field is realized by using optical polarization characteristics, and meanwhile, information coding is realized by using different polarization state loading in the optical characteristics, so that the problems of overhigh requirement on the stability of point-to-point communication and narrow coverage range of laser communication can be solved, that is, one-to-many simultaneous sharing of information can be realized, strong adaptability to electromagnetic interference environment is realized, meanwhile, the intercepting difficulty can be greatly increased by using polarized light coding, the reliability of group aircrafts is obviously improved, the information sharing speed reaches the light speed, and the number of information sharing targets is not less than 10-100.
The invention provides an optical one-to-many information sharing transmitting end of a cluster aircraft based on a polarized light field, which is arranged on a main aircraft and used for converting real-time information to be shared into digital codes;
the transmitting end is used for constructing a polarized light field and loading the digital code into the polarized light field to form the coded polarized light field, the coded polarized light field covers the area where the slave aircraft group is located, real-time information to be shared is transmitted by means of real-time change of the polarization state of the polarized light field, and one-to-many information sharing of other slave aircraft groups is implemented.
As shown in fig. 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 for emitting infrared light; the infrared light is expanded by a beam expander composed of a zoom lens so as to enable the light beam to cover the modulation area of the whole polarization encoder; the polarizing film is positioned between the beam expander and the polarization encoder, so that the light passing direction of the polarizing film and the X axis of the polarization encoder form an angle of 45 degrees, the X-Y orthogonal directions have the same vibration intensity, and the polarization encoder is convenient to perform polarization modulation; digital codes are input into the polarization encoder and are used for implementing space polarization encoding of the emergent polarized light field; the beam expanding transmitting end is composed of a zoom lens and is used for transmitting out the space polarized light to form a coded polarized light field.
The invention also provides a receiving end for optical one-to-many information sharing of the cluster aircraft based on the polarized light field, wherein the receiving end is installed on the slave aircraft and is used for determining the real-time change of the polarized light field polarization state of the region where the slave aircraft is located when the slave aircraft is located in the coded polarized light field constructed and transmitted by the transmitting end of the master aircraft, so that the transmission information of the master aircraft is obtained, and the one-to-many information sharing with the master aircraft is realized.
As shown in fig. 3, the slave aircraft receiver comprises: the signal collection system comprises a focusing lens group and a band-pass filter, wherein the focusing lens group and the band-pass filter are arranged in front and back, the focusing lens group is used for collecting and converging a polarized light field, and the band-pass filter is used for filtering the polarized light field to remove stray light;
the polarization decoding system comprises a quarter-wave plate, a polarization beam splitter, a polarizing plate 1, a detector 1, a polarizing plate 2 and a detector 2, wherein the quarter-wave plate is used for screening incident polarized light after the band-pass filter, the polarization beam splitter is used for dividing the screened polarized light into two beams of vertical linearly polarized light, one beam of the polarized light enters the detector 1 after being transmitted into the polarizing plate 1 and is used for measuring light intensity S1 entering the detector 1, the other beam of the polarized light enters the detector 2 after being transmitted into the polarizing plate 2 and is used for measuring light intensity S2 entering the detector 2, and the polarization state of a polarized light field in the area where the receiving end receives is obtained through light intensity S1 and light intensity S2.
The transmitting end, the receiving end and the information sharing method provided by the invention are adopted to complete digital prototype design, principle prototype design, digital simulation test and ground verification test, and the ground test verification of the principle prototype shows that the transmitting end of a 1mW laser (limited by the existing test conditions and the power of the laser is much lower than the design value) is adopted, the receiving end can receive polarized light fields in different polarization states at a distance of 65m, the diameter of the coverage area of the polarized light fields is more than 10m (the coverage area of the actual light fields is larger, the ground test is limited by the existing test conditions, the precision of a receiving detector is lower, if a 2W laser is adopted, the distance of the light fields in the rarefied atmosphere is not less than 100km, and the diameter of the coverage area of the polarized light fields is not less than 80 km); and the ground smoke is utilized to develop an interference test, and the cluster one-to-many information sharing technology based on the polarized light field has stronger adaptability to complex environments than ordinary optical communication.
The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are not particularly limited to the specific examples described herein.
Claims (10)
1. A polarized light field-based optical one-to-many information sharing transmitting terminal of a cluster aircraft is characterized in that the transmitting terminal is installed on a main aircraft and used for converting real-time information to be shared into digital codes;
the transmitting end is used for constructing a polarized light field and loading the digital code into the polarized light field to form the coded polarized light field, the coded polarized light field covers the area where the slave aircraft group is located, real-time information to be shared is transmitted by means of real-time change of the polarization state of the polarized light field, and one-to-many information sharing of other slave aircraft groups is implemented.
2. The optical one-to-many information sharing transmitting end of the cluster aircraft based on the polarized light field is characterized in that the transmitting end of the main aircraft comprises an infrared laser, a beam expander, a polarizing plate, a polarization encoder and a beam expanding transmitting end;
the infrared laser is used for emitting infrared light;
the beam expander is composed of a zoom lens and is used for expanding infrared light so that a light beam can cover the modulation area of the whole polarization encoder;
the polaroid is positioned between the beam expander and the polarization encoder, so that the light passing direction of the polaroid and the X axis of the polarization encoder form an angle of 45 degrees, and the X-Y orthogonal directions have the same vibration intensity;
digital codes are input into the polarization encoder and are used for implementing space polarization encoding of the emergent polarized light field;
and the beam expanding transmitting end consists of a zoom lens and is used for transmitting out the space polarized light to form a coded polarized light field.
3. The clustered aircraft optical one-to-many information sharing transmitting terminal based on polarized light field as claimed in claim 2, wherein the polarization encoder employs a spatial light modulator.
4. The receiving end is mounted on a slave aircraft and used for determining the real-time change of the polarization state of the polarized light field of the area where the slave aircraft is located when the slave aircraft is located in the coded polarized light field constructed and transmitted by the transmitting end of the master aircraft, so that the transmission information of the master aircraft is obtained, and the one-to-many information sharing with the master aircraft is realized.
5. The receiving end for optical one-to-many information sharing of the clustered aircraft based on the polarized light field according to claim 4, wherein the receiving end of the slave aircraft comprises a signal collecting system and a polarization decoding system;
the signal collecting system comprises a focusing lens group and a band-pass filter which are 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 comprises a quarter-wave plate, a polarization beam splitter, a first polarizing film, a first detector, a second polarizing film and a second detector, wherein the quarter-wave plate is used for screening incident polarized light after the band-pass filter, the polarization beam splitter is used for dividing the screened polarized light into two beams of vertical linearly polarized light, one beam of the polarized light enters the first detector after being transmitted into the first polarizing film and is used for measuring light intensity S1 entering the first detector, the other beam of the polarized light enters the second detector after being transmitted into the second polarizing film and is used for measuring light intensity S2 entering the second detector, and the polarization state of a region polarized light field where a receiving end receives is obtained through light intensity S1 and light intensity S2.
6. A cluster aircraft optical one-to-many information sharing method based on a polarized light field is characterized by comprising the following steps: the method comprises the steps that a main aircraft transmitting end converts real-time information to be shared into digital codes;
the method comprises the steps that a polarized light field is constructed at the transmitting end of a main aircraft, digital codes are loaded into the polarized light field to form a coded polarized light field, and the coded polarized light field covers the area where a slave aircraft group is located;
real-time information to be shared is transmitted by utilizing the real-time change of the polarization state of the polarization light field, and one-to-many information sharing of other slave aircraft groups is realized.
7. The method according to claim 6, wherein the step of constructing the polarized light field at the transmitting end of the main aircraft and loading the digital code into the polarized light field to form the encoded polarized light field is implemented by:
an infrared laser at the transmitting end of the main aircraft transmits infrared light, and the infrared light is expanded by a beam expander formed by a zoom lens, so that a light beam can cover the modulation area of the whole polarization encoder; a polarizing plate is added between the beam expander and the polarization encoder, so that the light passing direction of the polarizing plate and the X axis of the polarization encoder form an angle of 45 degrees, and the two orthogonal directions of the X axis and the Y axis of the polarization encoder have the same vibration intensity; and inputting the digital codes into a polarization encoder, implementing space polarization encoding of the emergent polarized light field, and finally emitting the space polarized light through a beam expanding emission end consisting of a zoom lens.
8. The clustered aircraft optical one-to-many information sharing method based on the polarized light field according to claim 7, wherein the diameter of the covered area of the polarized light field is as follows:
wherein R is the maximum distance between the slave aircraft in the slave aircraft group, P l Laser emission power, t l Transmission of the transmitting optical system, t a Atmospheric transmittance, t r -receiving end optical system transmittance, beta-half angle of divergence of light field, Dr-effective aperture of optical receiving end, ξ -engineering correction coefficient, D × specific detectivity, SNR-signal-to-noise ratio, a D -the pixel photosensitive area of the detector, Δ f-the detector bandwidth.
9. The optical one-to-many information sharing method for the cluster aircraft based on the polarized light field according to claim 7, wherein 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 80 km.
10. A cluster aircraft optical one-to-many information sharing method based on a polarized light field is characterized by comprising the following steps: the method comprises the steps that a slave aircraft is positioned in a coded polarized light field constructed and transmitted by a transmitting end of a main aircraft, the real-time change of the polarization state of the polarized light field of a region where the slave aircraft is positioned is determined, and then the transmission information of the main aircraft is obtained, so that one-to-many information sharing with the main aircraft is realized; the method comprises the following steps of determining real-time change of polarization state of a polarized light field in an area where an aircraft is located, and specifically comprises the following steps:
the polarized light field is collected and converged by a focusing lens group, and is filtered by a band-pass filter to remove stray light; the polarized light incident after the band-pass filter is screened by the quarter-wave plate, the polarized light after being screened is divided into two beams of vertical linearly polarized light by the polarization beam splitter, one beam enters a first detector after entering a first polaroid, the light intensity S1 of the first detector is measured, the other beam enters a second detector after entering a second polaroid, the light intensity S2 of the second detector is measured, the polarization state of the polarized light field in the area where the receiving end receives is obtained through the light intensity S1 and the light intensity S2, and then the real-time change of the polarization state of the polarized light field in the area where the aircraft is located is obtained.
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| CN114374434A (en) * | 2022-01-10 | 2022-04-19 | 北京理工大学 | One-to-many free space laser communication device based on polarized light field and method thereof |
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