A capture, tracking and targeting system based on spatial wavelength combination

Abstract

The present invention relates to the field of space optical communication, and in particular to a capture, tracking and aiming system based on space wavelength combination. The system includes: an optical transceiver module, a wavelength combination capture and tracking module and a communication transceiver processing module; the optical transceiver module is used to perform branching, filtering, modulation and combining processing on a first wide-spectrum laser signal to obtain a second wide-spectrum laser signal, and transmit the second wide-spectrum laser signal to a space channel. After the opposite terminal receives the second wide-spectrum laser signal, the opposite terminal performs dispersion and photoelectric processing on the received second broadband signal; the wavelength combination capture and tracking module controls the transmitting branch and the receiving branch of the optical transceiver module, and demodulates the second wide-spectrum laser signal; the communication transceiver processing module communicates with other subsystems of the space platform outside the system. The present invention improves the capture and tracking accuracy of the system and reduces cross-medium channel errors through wide-spectrum optical devices and a second wide-spectrum laser signal with a certain wavelength combination.

Description

Technical Field

[0001] The invention relates to the field of space optical communication, and in particular to a capture, tracking and aiming system based on space wavelength combination. Background Art

[0002] When two space laser terminals communicate with each other, they first need to realize the capture, tracking and aiming functions of the laser beam. According to different application scenarios and requirements, the capture, tracking and aiming functions of the space laser terminal can be realized by beacon light or signal light. The beacon light or signal light emitted by the local laser terminal passes through a cross-media channel composed of multiple media to reach the laser terminal at the other end, and realize functions such as capture, tracking, aiming, and data transmission. The cross-media channel can be composed of multiple media channels such as free space channels, atmospheric channels, thin cloud channels, fog channels, and water-gas interface channels.

[0003] Due to the random movement of the medium in the cross-medium channel, as well as the absorption and scattering of the medium on the optical signal, the light beam will produce random spatial swings, causing the optical signal to produce random amplitude fading, amplitude decay and phase distortion, which will seriously deteriorate the performance of beam capture and tracking. For example, in the atmospheric channel, the laser beam will be affected by atmospheric turbulence and severe weather conditions, resulting in random movement. On the other hand, due to the high-frequency vibration and low-frequency disturbance of the space platform carrying the laser terminal, the spatial position of the light beam will also change randomly, seriously affecting the capture and tracking performance.

[0004] Traditional laser terminal capture, tracking and aiming systems use single-wavelength beacon light or signal light to achieve capture and tracking, which cannot effectively counteract the random changes in the spatial position of the light beam in the cross-media channel, seriously deteriorating the capture and tracking performance. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a capture, tracking and aiming system based on spatial wavelength combination to achieve accuracy and stability of laser terminal signal transmission.

[0006] The present invention provides a capture, tracking and aiming system based on spatial wavelength combination, characterized in that the system comprises at least two terminals, each of which comprises: an optical transceiver module, a wavelength combination capture and tracking module and a communication transceiver processing module;

[0007] The optical transceiver module includes a transmitting branch and a receiving branch, and is used to perform branching, filtering, modulation and combining processing on a first wide-spectrum laser signal to obtain a second wide-spectrum laser signal, and transmit the second wide-spectrum laser signal to a spatial channel; after an opposite terminal receives the second wide-spectrum laser signal, the opposite terminal performs dispersion and photoelectric processing on the received second wide-spectrum signal; the second wide-spectrum laser signal is an optical signal of a certain wavelength combination;

[0008] The wavelength combination capture and tracking module is connected to the optical transceiver module, and is used to send control instructions to the transmitting branch and the receiving branch of the optical transceiver module based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy, and demodulate the second wide-spectrum laser signal after dispersion and photoelectric processing by the optical transceiver module;

[0009] The communication transceiver processing module is connected to the wavelength combination tracking module and is used to control the wavelength combination tracking module to communicate with other subsystems of the space platform outside the system.

[0010] Furthermore, the optical transceiver module also includes a telescope pointing module, which is connected to the transmitting branch and the receiving branch, and is used to transmit the second wide-spectrum laser signal sent by the transmitting branch into the spatial channel; the telescope pointing module is also used to receive the second wide-spectrum laser signal transmitted by the opposite terminal and send it to the receiving branch.

[0011] Furthermore, the transmitting branch in the optical transceiver module includes a wide-spectrum laser light source, an optical splitter, A tunable narrowband optical filter, An optical modulator, an optical combiner and an optical amplifier;

[0012] The broadband laser light source is connected to the optical splitter, and is used to generate a first broadband laser signal and output it to the optical splitter; the first broadband laser signal includes wavelengths, including ;

[0013] Optical splitter, with A tunable narrowband optical filter is connected to split the first broadband laser signal into branches, and outputting the optical signal of each branch to a tunable optical narrowband filter;

[0014] Each tunable narrowband optical filter is connected to an optical modulator, and the tunable narrowband optical filter is used to select optical filtering of corresponding wavelength and bandwidth according to a control command, and output the filtered optical signal to the connected optical modulator;

[0015] An optical modulator is connected to the optical combiner, and the optical modulator is used to modulate the filtered optical signal according to the control command and output it to the optical combiner;

[0016] The optical combiner is connected to the optical amplifier and is used to combine and process the modulated optical signal to obtain a second wide-spectrum laser signal and output it to the optical amplifier;

[0017] The optical amplifier is connected to the telescope pointing module and is used for amplifying the second wide-spectrum laser signal and outputting the amplified optical signal to the telescope pointing module.

[0018] Further, the receiving branch in the optical transceiver module includes a receiving dispersion component and a focal plane signal processing module;

[0019] A receiving dispersion component is connected to the telescope pointing module and the focal plane signal processing module, and is used for performing dispersion processing on the received second wide-spectrum laser signal, spatially separating certain wavelength combinations in the second wide-spectrum laser signal from each other, and outputting the separated optical signals to the focal plane signal processing module;

[0020] The focal plane signal processing module is used to perform photoelectric processing on the separated optical signal and perform corresponding signal processing according to the control command and the relative space and time information on the focal plane array detector. The processed output information is sent to the wavelength combination tracking module.

[0021] Furthermore, the wavelength combination tracking module includes a transmitting intelligent control module and a receiving intelligent control module;

[0022] The transmitting intelligent control module is used to generate corresponding control instructions and send them to the optical transceiver module based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy;

[0023] The receiving intelligent control module is used to generate corresponding control instructions based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy, send them to the optical transceiver module, and demodulate the received second wide spectrum laser signal.

[0024] Furthermore, the transmitting intelligent control module and the receiving intelligent control module include an inertial sensor control loop for detecting the motion state of the terminal in space; the motion state of the terminal in space includes a real-time position and a running speed.

[0025] Furthermore, the second wide-spectrum laser signal is composed of a first optical signal and a second optical signal. The second wide-spectrum laser signal is recorded as , the first optical signal is recorded as , the second optical signal is recorded as ,Right now ;

[0026] The wavelength combination of the first optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the optical transceiver module The tunable narrowband optical filter and optical modulator of the branch modulate the initial scanning position, real-time terminal position, scanning parameters and terminal speed information of the terminal into the wavelength combination On the first optical signal;

[0027] The wavelength combination of the second optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the tunable narrowband optical filters and optical modulators of the Q branches of the optical transceiver module to modulate the scanning step sequence and related scanning parameter information of the terminal to the wavelength combination. on a second optical signal;

[0028] The transmitting intelligent control module controls the optical combiner of the optical transceiver module to transmit the first optical signal and the second optical signal The second wide-spectrum laser signal is combined into a second wide-spectrum laser signal, and the telescope pointing module is controlled to transmit the second wide-spectrum laser signal into the space channel.

[0029] Furthermore, when the second wide-spectrum laser signal is received by the opposite terminal, the method includes:

[0030] The second wide-spectrum laser signal is sent to the receiving dispersion component after passing through the telescope pointing module. The receiving dispersion component separates the optical signals of a certain wavelength combination in the second wide-spectrum laser signal from each other in space and outputs them to the focal plane signal processing module. The focal plane signal converts the optical signal into an electrical signal and outputs it to the receiving intelligent control module.

[0031] After receiving the electrical signal, the receiving intelligent control module decodes the information contained in the second wide-spectrum laser signal to obtain the scanning initial position, real-time position, scanning parameters, terminal speed information and the current scanning step order of the opposite terminal, and then combines the scanning initial position, real-time position, scanning parameters, terminal speed information and the current scanning step order of the opposite terminal to calculate the scanning space position and position coordinates of the opposite terminal.

[0032] The embodiments of the present invention have the following technical effects:

[0033] 1. Enhanced capture and tracking capabilities: The system uses advanced optical devices with wide spectrum characteristics and a second broadband laser signal with a certain wavelength combination for capture and tracking. This second broadband laser signal with a certain wavelength combination can make the signal light carry richer information and help the system better resist signal errors caused by random changes in the spatial position of the light beam in the cross-media channel, thereby improving the accuracy of capture and tracking.

[0034] 2. Improved system adaptability and robustness: The system can adapt to different media conditions, such as free space, atmosphere, thin cloud layer, fog and water interface. Through a certain wavelength combination, the system can better adapt to the influence of different media on optical signals, such as absorption and scattering, thereby improving the adaptability and robustness of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the structure of a capture, tracking and aiming system based on spatial wavelength combination provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0038] Figure 1 The present invention provides a capture, tracking and aiming system based on spatial wavelength combination. Figure 1 , specifically comprising: the system comprises at least two terminals, each of the terminals comprising:

[0039] Optical transceiver module, wavelength combination tracking module and communication transceiver processing module;

[0040] The optical transceiver module includes a transmitting branch and a receiving branch, and is used to perform branching, filtering, modulation and combining processing on a first wide-spectrum laser signal to obtain a second wide-spectrum laser signal, and transmit the second wide-spectrum laser signal to a spatial channel; after an opposite terminal receives the second wide-spectrum laser signal, the opposite terminal performs dispersion and photoelectric processing on the received second wide-spectrum signal; the second wide-spectrum laser signal is an optical signal of a certain wavelength combination;

[0041] The wavelength combination capture and tracking module is connected to the optical transceiver module, and is used to send control instructions to the transmitting branch and the receiving branch of the optical transceiver module based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy, and demodulate the second wide-spectrum laser signal after dispersion and photoelectric processing by the optical transceiver module;

[0042] The communication transceiver processing module is connected to the wavelength combination tracking module and is used to control the wavelength combination tracking module to communicate with other subsystems of the space platform outside the system.

[0043] Specifically, the optical transceiver module also includes a telescope pointing module, which is connected to the transmitting branch and the receiving branch, and is used to transmit the second wide-spectrum laser signal sent by the transmitting branch into the spatial channel; the telescope pointing module is also used to receive the second wide-spectrum laser signal transmitted by the opposite terminal and send it to the receiving branch.

[0044] Specifically, the transmitting branch in the optical transceiver module includes a wide-spectrum laser light source, an optical splitter, A tunable narrowband optical filter, An optical modulator, an optical combiner and an optical amplifier;

[0045] The broadband laser light source is connected to the optical splitter, and is used to generate a first broadband laser signal and output it to the optical splitter; the first broadband laser signal wavelengths, including ;

[0046] Optical splitter, with a tunable narrowband optical filter connected to the first wide-spectrum laser signal, and used to divide the first wide-spectrum laser signal into a plurality of branches, and output the optical signal of each branch to a tunable narrowband optical filter;

[0047] Each tunable narrowband optical filter is connected to an optical modulator, and the tunable narrowband optical filter is used to select optical filtering of corresponding wavelength and bandwidth according to a control command, and output the filtered optical signal to the connected optical modulator;

[0048] An optical modulator is connected to the optical combiner, and the optical modulator is used to modulate the filtered optical signal according to the control command and output it to the optical combiner;

[0049] The optical combiner is connected to the optical amplifier and is used to combine and process the modulated optical signal to obtain a second wide-spectrum laser signal and output it to the optical amplifier;

[0050] The optical amplifier is connected to the telescope pointing module and is used for amplifying the second wide-spectrum laser signal and outputting the amplified optical signal to the telescope pointing module.

[0051] Specifically, the receiving branch in the optical transceiver module includes a receiving dispersion component and a focal plane signal processing module;

[0052] A receiving dispersion component is connected to the telescope pointing module and the focal plane signal processing module, and is used for performing dispersion processing on the received second wide-spectrum laser signal, spatially separating certain wavelength combinations in the second wide-spectrum laser signal from each other, and outputting the separated optical signals to the focal plane signal processing module;

[0053] The focal plane signal processing module is used to perform photoelectric processing on the separated optical signal and perform corresponding signal processing according to the control command and the relative space and time information on the focal plane array detector. The processed output information is sent to the wavelength combination tracking module.

[0054] Specifically, the wavelength combination tracking module includes a transmitting intelligent control module and a receiving intelligent control module;

[0055] The transmitting intelligent control module is used to generate corresponding control instructions based on the spatial wavelength combination capture strategy and send them to the optical transceiver module;

[0056] The receiving intelligent control module is used to generate corresponding control instructions based on the spatial wavelength combination tracking strategy and send them to the optical transceiver module, and demodulate the received second wide-spectrum laser signal.

[0057] The wavelength combination tracking module has a star sensor and an inertial navigator, and can receive GPS signals and information sent by other subsystems of the platform, so it can measure the spatial position coordinates of the terminal itself.

[0058] Specifically, the transmitting intelligent control module and the receiving intelligent control module include an inertial sensor control loop for detecting the motion state of the terminal in space, where the motion state of the terminal in space includes a real-time position and a running speed.

[0059] Specifically, the transmitting intelligent control module receives control commands sent by other subsystems of the space platform of the local terminal, including unified clock signals, fused sensor information, cross-media channel information, and spatial preset position information, motion trajectory information, posture information and terminal speed information of the local terminal and the opposite terminal respectively. After receiving the start command sent by the local laser terminal, the transmitting intelligent control module enters the capture phase; after receiving the return signal sent by the opposite terminal, the receiving intelligent control module enters the tracking phase.

[0060] In the capture phase or the tracking phase, the receiving intelligent control module of the opposite terminal uses control commands to control the telescope pointing module, the receiving dispersion component, and the focal plane signal processing module according to the spatial wavelength combination capture or spatial wavelength combination tracking strategy, receive the second wide-spectrum laser signal, and perform detection and processing.

[0061] Specifically, the second wide-spectrum laser signal is composed of a first optical signal and a second optical signal. The second wide-spectrum laser signal is recorded as , the first optical signal is recorded as , the second optical signal is recorded as ,Right now ;

[0062] The wavelength combination of the first optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the optical transceiver module The tunable narrowband optical filter and optical modulator of the branch represent the terminal's initial scanning position, terminal real-time position, scanning parameters and terminal speed information as codewords. , and form a code stream , modulated to a wavelength combination The first optical signal superior;

[0063] The wavelength combination of the second optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the tunable narrowband optical filters and optical modulators of the Q branches of the optical transceiver module, and represents the scanning step sequence and related scanning parameter information of the terminal as code words. , and then form a code stream , and modulated to a wavelength combination The second optical signal superior;

[0064] The transmitting intelligent control module controls the optical combiner of the optical transceiver module to transmit the first optical signal and the second optical signal The second wide-spectrum laser signal is combined into a second wide-spectrum laser signal, and the telescope pointing module is controlled to direct the second wide-spectrum laser signal Transmit into the spatial channel.

[0065] Specifically, when the second wide-spectrum laser signal is received by the opposite terminal, it includes:

[0066] The second wide-spectrum laser signal is sent to the receiving dispersion component after passing through the telescope pointing module. The receiving dispersion component separates the optical signals of a certain wavelength combination in the second wide-spectrum laser signal from each other in space and outputs them to the focal plane signal processing module. The focal plane signal converts the optical signal into an electrical signal and outputs it to the receiving intelligent control module. After receiving the electrical signal, the receiving intelligent control module decodes the information contained in the second wide-spectrum laser signal to obtain the scanning initial position, the terminal real-time position, the scanning parameters and the terminal speed information of the opposite terminal. At the same time, the wavelength combination used and The wavelength interval between the two terminals or the method of searching the corresponding table of wavelength combinations and stepping orders preset by the system is used to determine the order of scanning steps at the current moment, and then the scanning space position and position coordinates of the other terminal are calculated by combining the initial scanning position of the other terminal, the real-time position of the terminal, the scanning parameters and the terminal speed information.

[0067] Specifically, the wide-spectrum light source can use an optical comb as the wide-spectrum light source of the system; the tunable narrow-band optical filter can use an acousto-optic tunable filter, a liquid crystal tunable filter or an FP tunable filter; the optical modulator can use a Mach-Zehnder modulator; the optical splitter and the optical combiner can use an optical coupler or an optical circulator respectively; the optical amplifier uses a fiber optical amplifier; the receiving dispersion component can use one or more gratings, or one or more arrayed waveguide gratings, or a tunable filter for rapid frequency scanning, so as to separate optical signals of different wavelengths in space.

[0068] The present invention adopts a spatial wavelength combination method to realize the capture, tracking and aiming system of spatial light beams. In the capture stage of laser communication, the local laser terminal emits a light beam with a certain wavelength combination and real-time position information of the local terminal in the uncertain area (FOU), and performs spatial scanning until the opposite laser terminal receives the light beam and emits a return light beam. When the return light beam is detected and locked by the local terminal, both terminals adjust their sight lines and enter the tracking stage. In the tracking stage, while communicating, both terminals use light beams to track the opposite terminal to keep the visual axes of both terminals aligned.

[0069] It should be noted that the terms used in the present invention are only for describing specific embodiments, rather than limiting the scope of the present application. As shown in the present specification, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of more restrictions, the elements defined by the sentence "include one..." do not exclude the presence of other identical elements in the process, method or device including the elements.

[0070] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A capture, tracking and aiming system based on spatial wavelength combination, characterized in that: The system includes at least two terminals, each of which includes: an optical transceiver module, a wavelength combination tracking module and a communication transceiver processing module; The optical transceiver module includes a transmitting branch and a receiving branch, and is used to perform branching, filtering, modulation and combining processing on a first wide-spectrum laser signal to obtain a second wide-spectrum laser signal, and transmit the second wide-spectrum laser signal to a spatial channel; after an opposite terminal receives the second wide-spectrum laser signal, the opposite terminal performs dispersion and photoelectric processing on the received second wide-spectrum signal; the second wide-spectrum laser signal is an optical signal of a certain wavelength combination; The wavelength combination tracking module is connected to the optical transceiver module, and is used to send control instructions to the transmitting branch and the receiving branch of the optical transceiver module based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy, and demodulate the second wide-spectrum laser signal after the dispersion and photoelectric processing of the optical transceiver module; the wavelength combination tracking module includes a transmitting intelligent control module and a receiving intelligent control module; the transmitting intelligent control module is used to generate corresponding control instructions based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy and send them to the optical transceiver module; the receiving intelligent control module is used to generate corresponding control instructions based on the spatial wavelength combination capture strategy and the spatial wavelength combination tracking strategy and send them to the optical transceiver module, and demodulate the received second wide-spectrum laser signal; the second wide-spectrum laser signal consists of a first optical signal and a second optical signal, and the second wide-spectrum laser signal is recorded as , the first optical signal is recorded as , the second optical signal is recorded as ,Right now ; The wavelength combination of the first optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the optical transceiver module The tunable narrowband optical filter and optical modulator of the branch modulate the initial scanning position, real-time terminal position, scanning parameters and terminal speed information of the terminal into the wavelength combination On the first optical signal; The wavelength combination of the second optical signal is expressed as , wavelength combination Included wavelength The transmitting intelligent control module controls the tunable narrowband optical filters and optical modulators of the Q branches of the optical transceiver module to modulate the scanning step sequence and related scanning parameter information of the terminal to the wavelength combination. on a second optical signal; The transmitting intelligent control module controls the optical combiner of the optical transceiver module to transmit the first optical signal and the second optical signal Combining into a second wide-spectrum laser signal, and controlling the telescope pointing module to transmit the second wide-spectrum laser signal into the space channel; The communication transceiver processing module is connected to the wavelength combination tracking module and is used to control the wavelength combination tracking module to communicate with other subsystems of the space platform outside the system.

2. A capture, tracking and aiming system based on spatial wavelength combination according to claim 1, characterized in that: The optical transceiver module also includes a telescope pointing module, which is connected to the transmitting branch and the receiving branch. The telescope pointing module is used to transmit the second wide-spectrum laser signal sent by the transmitting branch into the space channel; the telescope pointing module is also used to receive the second wide-spectrum laser signal transmitted by the opposite terminal and send it to the receiving branch.

3. A capture, tracking and aiming system based on spatial wavelength combination according to claim 2, characterized in that: The transmitting branch in the optical transceiver module includes a wide-spectrum laser light source, an optical splitter, A tunable narrowband optical filter, An optical modulator, an optical combiner and an optical amplifier; The broadband laser light source is connected to the optical splitter, and is used to generate a first broadband laser signal and output it to the optical splitter; the first broadband laser signal includes wavelengths, including ; Optical splitter, with A tunable narrowband optical filter is connected to split the first broadband laser signal into branches, and outputting the optical signal of each branch to a tunable optical narrowband filter; Each tunable narrowband optical filter is connected to an optical modulator, and the tunable narrowband optical filter is used to select optical filtering of corresponding wavelength and bandwidth according to a control command, and output the filtered optical signal to the connected optical modulator; An optical modulator is connected to the optical combiner, and the optical modulator is used to modulate the filtered optical signal according to the control command and output it to the optical combiner; The optical combiner is connected to the optical amplifier and is used to combine and process the modulated optical signal to obtain a second wide-spectrum laser signal and output it to the optical amplifier; The optical amplifier is connected to the telescope pointing module and is used for amplifying the second wide-spectrum laser signal and outputting the amplified optical signal to the telescope pointing module.

4. The capture, tracking and aiming system based on spatial wavelength combination according to claim 2, characterized in that: The receiving branch in the optical transceiver module includes a receiving dispersion component and a focal plane signal processing module; A receiving dispersion component is connected to the telescope pointing module and the focal plane signal processing module, and is used for performing dispersion processing on the received second wide-spectrum laser signal, spatially separating certain wavelength combinations in the second wide-spectrum laser signal from each other, and outputting the separated optical signals to the focal plane signal processing module; The focal plane signal processing module is used to perform photoelectric processing on the separated optical signal and perform corresponding signal processing according to the control command and the relative space and time information on the focal plane array detector. The processed output information is sent to the wavelength combination tracking module.

5. The capture, tracking and aiming system based on spatial wavelength combination according to claim 1, characterized in that: The transmitting intelligent control module and the receiving intelligent control module include an inertial sensor control loop for detecting the motion state of the terminal in space; the motion state of the terminal in space includes a real-time position and a running speed.

6. The capture, tracking and aiming system based on spatial wavelength combination according to claim 1, characterized in that: When the second wide-spectrum laser signal is received by the opposite terminal, the method includes: The second wide-spectrum laser signal is sent to the receiving dispersion component after passing through the telescope pointing module. The receiving dispersion component separates the optical signals of a certain wavelength combination in the second wide-spectrum laser signal from each other in space and outputs them to the focal plane signal processing module. The focal plane signal converts the optical signal into an electrical signal and outputs it to the receiving intelligent control module. After receiving the electrical signal, the receiving intelligent control module decodes the information contained in the second wide-spectrum laser signal to obtain the scanning initial position, real-time position, scanning parameters, terminal speed information and the current scanning step order of the opposite terminal, and then combines the scanning initial position, real-time position, scanning parameters, terminal speed information and the current scanning step order of the opposite terminal to calculate the scanning space position and position coordinates of the opposite terminal.

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