A method for detecting radar radio frequency channel reconstruction

Abstract

The application discloses a kind of reconstructions of investigation radar radio frequency channel method, it is related to radar radio frequency channel technical field, it includes according to the function division sub-function module of radio frequency channel;The sub-function module of common function duplication is integrated;The working state of each sub-function module is detected by control core;Based on the function of the sub-function module, each function implementation unit in sub-function module is configured.Frequency source module and channel module internal composition are decomposed and refined according to function, divided into several sub-functions, each sub-function is modularized design, each module is relatively independent, structure is clear, interface is simple, conducive to mass production.At the same time, the complexity of system is reduced, the realization link of product is relatively simplified, the maintainability of product is improved, maintenance cost is saved to realize wide frequency band coverage, work frequency band control, improve channel module resource utilization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radar radio frequency channel, and particularly relates to a reconnoitering radar radio frequency channel reconstruction method. BACKGROUND

[0002] The frequencies of the reconnoitering radar are divided into low frequency, medium frequency and high frequency. The radio frequency channel function is mainly loading, receiving, filtering, amplifying, frequency conversion and outputting intermediate frequency measurement and control signals or data transmission signals. The radio frequency channel system includes S-band, X-band, Ka-band and the like; the receiving channel includes LAN, polarization selection switch and frequency converter, and when the receiving end receives the radio frequency signal of the antenna, the target value is output after a series of processing. The radio frequency transmitting channel system is mainly composed of remote control up-converter, amplifier, small ring frequency converter and the like, realizes up-conversion of the intermediate frequency remote control signal to the radio frequency signal, and radiates out through the antenna transmitting end after the amplifier, however, in order to realize the key important index parameters, a terminal module meeting the requirements needs to be designed, and the appearance, interface layout, weight, shielding, filtering, grounding, heat dissipation, anti-shock, sealing, three-proofing, installation and the like are ensured through structural design, so as to realize the index parameters of each channel radio frequency module.

[0003] At present, the Chinese invention patent with the application number 2020108927548 discloses a channel switching method and device, which can monitor whether there is a radar signal on the radar channel in advance, so as to select the reference when the radar signal is monitored on the working radar channel of the radio frequency unit in the working mode which does not include the pre-monitoring radar signal mode and needs to switch the radar channel, switch to the radar channel on which the radar signal is not monitored as much as possible, avoid the silence or reduce the silence time, and further improve the user experience of the holding user of the accessed wireless terminal. However, the wide frequency band coverage and working frequency band control are not realized, the replaced channel resources are in standby state, and the problem of low channel module resource utilization exists. SUMMARY

[0004] The technical problem solved by the present application is that the existing technology does not realize wide frequency band coverage, working frequency band control, the replaced channel resources are in standby state, and the problem of low channel module resource utilization exists.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a reconnoitering radar radio frequency channel reconstruction method, which includes dividing sub-function modules according to the functions of the radio frequency channel; integrating the sub-function modules which are repeatedly functional; detecting the working states of each sub-function module through the control core; and configuring each functional implementation unit in the sub-function module based on the functions of the sub-function module.

[0006] As a preferred scheme of the method for reconstructing a radar RF channel for reconnaissance, wherein: the sub-function modules according to the function division of the RF channel include a frequency source module and a channel module, the frequency source module is used for generating a transmitting signal, and the channel module is used for transmitting the signal and receiving a feedback signal.

[0007] As a preferred scheme of the method for reconstructing a radar RF channel for reconnaissance, wherein: the frequency source module includes a crystal oscillator unit, a Ka local oscillator generating unit, a passive wideband local oscillator generating unit, an X / Ku local oscillator generating unit, a complex waveform generating unit and an S-band point source.

[0008] As a preferred scheme of the method for reconstructing a radar RF channel for reconnaissance, wherein: the integration of the sub-function modules with repeated functions includes: the crystal oscillator unit is used for generating a crystal oscillator signal, the crystal oscillator signal is divided into five paths after passing through a first power divider, and the first path of the crystal oscillator signal is input into the Ka local oscillator generating unit, after frequency synthesis by a first phase-locked loop and signal amplification by a first amplifier, the signal enters the channel module; the second path of the crystal oscillator signal is input into the passive wideband local oscillator generating unit, and after passing through a second power divider, the signal is divided into two paths, one of which enters the channel module after passing through a first frequency converter and a second amplifier, and the other of which enters the channel module after passing through a second frequency converter and a third amplifier; the third path of the crystal oscillator signal is input into the X / Ku local oscillator generating unit, enters a fourth amplifier through a first switch, and then enters the channel module through a second switch; the fourth path of the crystal oscillator signal is input into the S-band point source, and after passing through a third power divider, the signal is divided into two paths, one of which enters the fourth amplifier through a third switch, and then enters the channel module through a fourth switch after signal amplification; the fifth path of the crystal oscillator signal is input into the second phase-locked loop after inputting the second phase-locked loop, and the fourth path of the crystal oscillator signal is input into the S-band point source, and after passing through the third power divider, the signal is divided into two paths, one of which is input into the second phase-locked loop for frequency synthesis, and then input into an up-conversion module to convert into a high-frequency signal, and then enters the channel module through a fifth amplifier and a second switch.

[0009] As a preferred scheme of the method for reconstructing a radar RF channel for reconnaissance, wherein: the channel module includes a wideband passive reconnaissance receiving unit, a wideband multi-channel transceiver unit, a Ka multi-channel transceiver unit, an X / Ku multi-channel transceiver unit, and the wideband passive reconnaissance receiving unit includes the wideband multi-channel transceiver unit.

[0010] As a preferred scheme of the reconnaissance radar radio frequency channel reconstruction method, the crystal oscillator unit is used to generate a crystal oscillator signal, the crystal oscillator signal is divided into five paths after a first power divider, and a first path crystal oscillator signal is input into a Ka local oscillator generation unit, is frequency-synthesized through a first phase-locked loop, is input into a Ka multi-channel transceiver unit after a first amplifier, a second path crystal oscillator signal is input into a passive wideband local oscillator generation unit, is divided into two paths after a second power divider, one path is input into a wideband multi-channel transceiver unit after a first frequency converter and a second amplifier, and the other path is input into the wideband multi-channel transceiver unit after a second frequency converter and a third amplifier, a third path crystal oscillator signal is input into an X / Ku local oscillator generation unit, is input into a fourth amplifier through a first switch, and is then input into an X / Ku multi-channel transceiver unit through a second switch, a fourth path crystal oscillator signal is input into an S-band point source, is divided into two paths after a third power divider, one path is input into a fourth amplifier through a third switch, is amplified, is then input into the X / Ku multi-channel transceiver unit through a fourth switch, a fifth path crystal oscillator signal is input into a complex waveform generation unit, is input into a second phase-locked loop, and a fourth path crystal oscillator signal is input into an S-band point source, is divided into two paths after a third power divider, the other path is input into the second phase-locked loop for frequency synthesis, is input into an up-conversion component, is converted into a high-frequency signal after conversion, is input into the X / Ku multi-channel transceiver unit through a fifth amplifier and a second switch.

[0011] As a preferred scheme of the reconnaissance radar radio frequency channel reconstruction method, the detection of the working state of each sub-function module by the control core includes: detection of the working state of the crystal oscillator unit, the Ka local oscillator generation unit, the passive wideband local oscillator generation unit, the X / Ku local oscillator generation unit, the complex waveform generation unit, the S-band point source, the wideband passive reconnaissance receiving unit, the wideband multi-channel transceiver unit, the Ka multi-channel transceiver unit, the X / Ku multi-channel transceiver unit, and the wideband passive reconnaissance receiving unit by the control core; latching and data decoding of the communication data according to the received control instruction, and returning the current working state information to the signal processing extension, and issuing a control instruction based on the working state information.

[0012] As a preferred scheme of the reconnaissance radar radio frequency channel reconstruction method, the configuration of each function implementation unit in the sub-function module based on the function of the sub-function module includes: time division multiplexing of the wideband passive reconnaissance receiving unit and the X / Ku multi-channel transceiver unit through the wideband multi-channel transceiver unit frequency conversion to 8-12GHz; simultaneous operation of the Ka multi-channel transceiver unit and the X / Ku multi-channel transceiver unit: frequency conversion of the Ka band signal to 8-18GHz through a frequency agile converter, and common multiplexing of the X / Ku band signal in the X / Ku transceiver channel.

[0013] The beneficial effects of the present application are as follows: the internal components of the frequency source module and the channel module are decomposed and refined according to functions, divided into several sub-functions, each sub-function is designed in a modular manner, the modules are relatively independent, the structure is clear, the interface is simple, and batch production is facilitated. At the same time, the complexity of the system is reduced, the product implementation process is relatively simplified, the maintainability of the product is improved, the maintenance cost is saved, the wide frequency band coverage, the working frequency band control are realized, the resource utilization rate of the channel module is improved, the frequency shift and compression are realized through the wideband passive reconnaissance receiving unit, the wideband multi-channel transceiving unit, the Ka multi-channel transceiving unit, the X / Ku multi-channel transceiving unit and the wideband passive reconnaissance receiving unit, the radio frequency synthesis and channel multiplexing are realized, the multiplexing and multi-mode composite design of the active and passive, communication, interference and other channels are completed, the purpose of channel resource sharing is achieved, and the utilization rate of the channel resource is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A basic flowchart of a reconnaissance radar radio frequency channel reconstruction method provided for an embodiment of the present application is shown.

[0015] Figure 2 A basic component framework diagram of a frequency source module of a reconnaissance radar radio frequency channel reconstruction method provided for an embodiment of the present application is shown.

[0016] Figure 3 A channel module multiplexing schematic diagram of a reconnaissance radar radio frequency channel reconstruction method provided for an embodiment of the present application is shown. DETAILED DESCRIPTION

[0017] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0018] Embodiment 1

[0019] REFERENCE Figures 1 to 3 For an embodiment of the present application, a reconnaissance radar radio frequency channel reconstruction method is provided, which comprises:

[0020] S1: sub-function modules are divided according to the functions of the radio frequency channel, including:

[0021] The sub-function modules include a frequency source module and a channel module, the frequency source module is used to generate a transmission signal, and the channel module is used to transmit the signal and receive a feedback signal.

[0022] The frequency source module comprises a crystal oscillator unit, a Ka local oscillator generating unit, a passive broadband local oscillator generating unit, an X / Ku local oscillator generating unit, a complex waveform generating unit and an S-band point source. The three main interface parameters of series design, complex waveform series and instantaneous bandwidth series are series designed.

[0023] The research on the frequency source module working frequency band series mainly summarizes the working frequency band of the radar frequency source, formulates each interval of the radar series main working frequency band, each interval of the frequency band is left with a certain margin, and finally establishes the working frequency band of the radar frequency source, so that the frequency source working frequency band can cover L, S, C, X, Ku and Ka frequency bands, and can respectively output 20MHz, 40MHz, 80MHz, 100MHz, 200MHz and 400MHz instantaneous bandwidth linear frequency modulation signals, forming the instantaneous bandwidth series.

[0024] S2: the integration of the common sub-function modules with repeated functions comprises:

[0025] The crystal oscillator unit is used to generate a crystal oscillator signal, which is divided into five paths after a first power divider, and the first path of the crystal oscillator signal is input into the Ka local oscillator generating unit, which is frequency-synthesized through a first phase-locked loop, and then input into the channel module through a first amplifier;

[0026] The second path of the crystal oscillator signal is input into the passive broadband local oscillator generating unit, which is divided into two paths after a second power divider, one of which is input into the channel module through a first frequency converter and a second amplifier, and the other of which is input into the channel module through a second frequency converter and a third amplifier;

[0027] The third path of the crystal oscillator signal is input into the X / Ku local oscillator generating unit, which is input into a fourth amplifier through a first switching switch, and then input into the channel module through a second switching switch;

[0028] The fourth path of the crystal oscillator signal is input into the S-band point source, which is divided into two paths after a third power divider, one of which is input into the fourth amplifier through a third switching switch, and then input into the channel module through a fourth switching switch after signal amplification;

[0029] The fifth path of the crystal oscillator signal is input into the complex waveform generating unit and the second phase-locked loop, and the fourth path of the crystal oscillator signal is input into the S-band point source, which is divided into two paths after a third power divider, and the other path is input into the second phase-locked loop for frequency synthesis, and then input into the up-conversion module after being converted into a high-frequency signal, and then input into the channel module through a fifth amplifier and a second switching switch.

[0030] Table 1: The crystal oscillator signal indexes output by the crystal oscillator unit are as follows.

[0031] Output signal First crystal oscillator signal (Ka local oscillator) Second crystal oscillator signal (passive wideband local oscillator) Third crystal oscillator signal (X / Ku two local oscillators) Fifth crystal oscillator signal (complex waveform) Output frequency 25G 19G 11.6G 2.4G Output power ≥ 15 dBm ≥ 15 dBm ≥ 5 dBm ≥ 5 dBm Phase noise ≤ -90 dBc / Hz @ 1 kHz ≤ -90 dBc / Hz @ 1 kHz ≤ -95 dBc / Hz @ 1 kHz ≤ -105 dBc / Hz @ 1 kHz Spur suppression ≥ 50 dBc ≥ 50 dBc ≥ 50 dBc ≥ 50 dBc Harmonic suppression ≥ 25 dBc ≥ 25 dBc ≥ 20 dBc ≥ 20 dBc Power supply 5 V / 300 mA, 5 V / 20 mA 5 V / 300 mA, 13 V / 20 mA 5 V / 200 mA 5 V / 200 mA

[0032] The channel module includes a wideband passive reconnaissance receiving unit, a wideband multi-channel transceiving unit, a Ka multi-channel transceiving unit, and an X / Ku multi-channel transceiving unit.

[0033] Frequency shifting and compression are performed by the wideband passive reconnaissance receiving unit, the wideband multi-channel transceiving unit, the Ka multi-channel transceiving unit, and the X / Ku multi-channel transceiving unit, radio frequency synthesis and channel module multiplexing are realized, and multiplexing and multi-mode composite design of active and passive, communication, interference, and other channels are completed.

[0034] In this embodiment, the design index of the wideband multi-channel receiving unit is as follows: input operating frequency: 0.4 GHz to 12 GHz; output frequency range: 8 GHz to 12 GHz; received signal input level range: -70 dBm to 20 dBm; 1 local oscillator signal input level: ≥1 dBm; 2 local oscillator signal input level: ≥13 dBm; received input output standing wave: ≤1.8; received gain: 46 dB±2 dB; noise factor: ≤6.5 dB; received gain consistency between channels: ≤±2 dB; AGC level: 35 dB; burnout resistance power: ≥30 dBm (continuous wave).

[0035] The X / Ku multi-channel transceiving unit performs amplitude limiting, blocking, low-noise amplification, and other processing on the radio frequency signals fed into the antenna, and performs image rejection mixing with the input radio frequency local oscillator signal, amplifies the obtained intermediate frequency signal, performs AGC control and filtering, and other processing. The radio frequency transmission signals input from the frequency synthesis are divided and amplified, and the transmission signals with a certain power are output.

[0036] The design index of the X / Ku multi-channel transceiving unit is as follows: radio frequency receiving operating frequency: 8 GHz to 12 GHz; received signal input level range: -60 dBm to -10 dBm; 1 local oscillator signal input level: ≥10 dBm; 2 local oscillator signal input level: ≥10 dBm; burnout resistance power: ≥30 dBm (continuous wave); received input standing wave: ≤1.8; received gain: 53 dB±3 dB; AGC level: 61.5 dB; received channel same 16-channel phase consistency: ≤±15°; channel-to-channel amplitude consistency: ≤±1.5 dB; radio frequency transmission operating frequency: 9 GHz to 11 GHz; 15 GHz to 17 GHz; transmission signal input level: ≥10 dBm; transmission signal output power: ≥25 dBm; transmission output power consistency between channels: ≤±2 dB; transmission channel-to-channel phase consistency: ≤±15°.

[0037] The Ka multi-channel transceiver unit actively converts the Ka band to the active X or Ku band, is multiplexed with the X / Ku band multi-channel transceiver unit, is then uniformly converted to the S band, and enters the signal processing unit for signal processing. The design index of the Ka multi-channel transceiver unit is as follows: the radio frequency receiving working frequency is 34GHz-36GHz; the receiving signal input level range is -70dBm-20dBm; the local oscillator signal input level is ≥12dBm; the receiving input and output standing wave is ≤1.8; the receiving gain is 22dB±2dB; the noise coefficient is ≤6dB; the AGC level is 20dB; the receiving gain consistency between channels is ≤±1.5dB; the radio frequency transmitting working frequency is 9GHz-11GHz; 15GHz-17GHz; the transmitting signal input level is 23dBm; the transmitting signal output power is ≥25dBm; and the transmitting output power consistency between channels is ≤±1.5dB.

[0038] The wideband passive reconnaissance receiving unit converts and compresses the passive 0.4GHz-12GHz wideband signal to the X band, and is multiplexed with the receiving part of the X / Ku multi-channel transceiver unit. The design index of the wideband passive reconnaissance receiving unit is as follows: the input working frequency is 8GHz-12GHz; the output frequency range is 0.4GHz-12GHz; the transmitting signal input level is ≥0dBm; the 1 local oscillator signal input level is ≥1dBm; the 2 local oscillator signal input level is ≥9dBm; the transmitting signal output power is ≥23dBm (low frequency), ≥30dBm (high frequency); and the AGC level is 35dB.

[0039] The crystal unit is used to generate a crystal signal, the crystal signal is divided into five paths after passing through the first power divider, and the first path of the crystal signal is input into the Ka local oscillator generating unit, is frequency-synthesized after passing through the first phase-locked loop, and enters the Ka multi-channel transceiver unit after passing through the first amplifier;

[0040] The second path of the crystal signal is input into the passive wideband local oscillator generating unit, is divided into two paths after passing through the second power divider, one of the two paths enters the wideband multi-channel transceiver unit after passing through the first frequency converter and the second amplifier, and the other path enters the wideband multi-channel transceiver unit after passing through the second frequency converter and the third amplifier;

[0041] The third path of the crystal signal is input into the X / Ku local oscillator generating unit, enters the fourth amplifier after passing through the first switching switch, and then enters the X / Ku multi-channel transceiver unit after passing through the second switching switch;

[0042] The fourth path of the crystal signal is input into the S band point source, is divided into two paths after passing through the third power divider, one of the two paths enters the fourth amplifier after passing through the third switching switch, is amplified, and then enters the X / Ku multi-channel transceiver unit after passing through the fourth switching switch;

[0043] The fifth crystal oscillator signal is input into a complex waveform generating unit, and then input into a second phase-locked loop, and the fourth crystal oscillator signal is input into an S-band point source, and then divided into two paths through a third power divider, and the other path is input into the second phase-locked loop for frequency synthesis, and then input into an up-conversion component, and then input into a fifth amplifier, and then input into the X / Ku multi-channel transceiver unit through a second switch.

[0044] S3: detecting the working state of each sub-function module by the control core, including:

[0045] detecting the working state of the crystal oscillator unit, the Ka local oscillator generating unit, the passive broadband local oscillator generating unit, the X / Ku local oscillator generating unit, the complex waveform generating unit, the S-band point source, the broadband passive reconnaissance receiving unit, the broadband multi-channel transceiver unit, the Ka multi-channel transceiver unit, and the X / Ku multi-channel transceiver unit by the control core;

[0046] latching and decoding the communication data according to the received control instruction, and returning the current working state information to the signal processing extension, and issuing the control instruction based on the working state information.

[0047] S4: configuring each function implementation unit in the sub-function module based on the function of the sub-function module, including:

[0048] frequency converting the broadband passive reconnaissance receiving unit to 8-12GHz through the broadband multi-channel transceiver unit and time-division multiplexing with the X / Ku multi-channel transceiver unit;

[0049] simultaneously working the Ka multi-channel transceiver unit and the X / Ku multi-channel transceiver unit: frequency converting the Ka-band signal to 8-18GHz through a frequency agile converter, and multiplexing the X / Ku transceiver channel with the X / Ku-band signal.

[0050] When the radar is used for long-distance detection, the broadband passive reconnaissance receiving unit is frequency converted to 8-12GHz through the broadband multi-channel transceiver unit and time-division multiplexed with the X / Ku multi-channel transceiver unit, and alternately operated to complete the reconnaissance function; the S-band point source is multiplexed with the broadband passive reconnaissance receiving unit, that is, the receiving and transmitting are multiplexed with the broadband multi-channel receiving and transmitting, and operated in time division.

[0051] When the radar is used for short-distance detection, the Ka multi-channel transceiver unit and the X / Ku multi-channel transceiver unit are used for active detection; the Ku-band communication and the Ku-band detection are time-division multiplexed through the X / Ku multi-channel transceiver unit.

[0052] The S and Ku multi-band communication radio frequency channel functions are provided. The S frequency band transmits a multiplexed interference channel, and the S frequency band receives a multiplexed passive reconnaissance channel. The Ku frequency band is multiplexed with an active array. The frequency source module and the channel module are internally decomposed and refined according to functions, and are divided into a plurality of sub-functions. Each sub-function is designed in a modular manner, and the modules are relatively independent, the structure is clear, the interface is simple, and batch production is facilitated. Meanwhile, the complexity of the system is reduced, the product implementation is relatively simplified, the maintainability of the product is improved, the maintenance cost is saved, wide-band coverage, working frequency band control are achieved, the resource utilization rate of the channel module is improved, frequency shifting and compression are performed through a wide-band passive reconnaissance receiving unit, a wide-band multi-channel transceiving unit, a Ka multi-channel transceiving unit, and an X / Ku multi-channel transceiving unit, radio frequency synthesis and channel multiplexing are achieved, the multiplexing and multi-mode composite design of channels such as active and passive, communication, and interference are completed, the purpose of channel resource sharing is achieved, and the utilization rate of channel resources is improved.

[0053] Embodiment 2

[0054] With reference to Figure 3 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that, according to different channel resource multiplexing combinations, resource scheduling management is performed on the radio frequency mode:

[0055] 1) Active and passive time multiplexing: at a long distance (R≥500Km), the radar starts passive detection, mainly uses a wide-band passive reconnaissance receiving unit to receive through a wide-band multi-channel transceiving unit, the reconnaissance data rate in this working state is not high, a signal with large energy and long repetition period can be used when a long-distance target is detected, and a short pulse train with a high data rate is used in the first half of the wide pulse repetition period to realize detection of a long-distance target; at a short distance (200-150Km), active detection is started (the active and passive switching time is 10ms, which meets the guidance rate), a pulse train signal with a high frequency band, a narrow pulse width, and a repetition frequency of more than 1000Hz is used, and a pencil beam is used for the antenna beam to obtain accurate angle resolution. Due to the flexibility of phased array antenna beam scanning, different tracking data rates can be used according to the number, distance, importance, and threat level of the tracked targets, that is, in the repetition period of the tracking target signal with the lowest data rate, a data rate signal corresponding to the tracking state is arranged to realize the allocation of multi-beam signal energy and meet the requirements of different tracking target data rates.

[0056] The radio frequency signal resources in the radar system can be reasonably divided and defined, and the resource management and scheduling should be uniformly designed, considered and coordinated. According to the priority of each function in different working modes, a reasonable resource allocation algorithm and reconstruction strategy are designed to optimize the resource scheduling configuration; under the cooperation of system management and each sub-function component management program, the unified management and scheduling of system antenna resources, radio frequency resources, network resources, hardware module resources and software module resources are comprehensively realized, so as to achieve the purpose of system miniaturization, generalization and intelligentization.

[0057] It should be appreciated that embodiments of the present application can be realized or implemented by computer hardware, a combination of hardware and software, or through computer instructions stored in a non-transitory computer readable memory. The method can be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, wherein the storage medium thus configured causes a computer to operate in a specific and predefined manner according to the methods described in the specific embodiments and the accompanying drawings. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, if necessary, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. In addition, the program can be run on a programmed special-purpose integrated circuit for this purpose.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A method for reconnoitering a radar RF channel, characterized in that, The method comprises the following steps: dividing the radio frequency channel into sub-function modules according to functions; integrating sub-function modules with repeated functions; detecting the working state of each sub-function module by a control core; configuring each function implementation unit in the sub-function module based on the function of the sub-function module; dividing the radio frequency channel into sub-function modules according to functions comprises: the sub-function module comprises a frequency source module and a channel module, the frequency source module is used for generating a transmitting signal, and the channel module is used for transmitting the signal and receiving a feedback signal; the frequency source module comprises a crystal oscillator unit, a Ka local oscillator generating unit, a passive wideband local oscillator generating unit, an X / Ku local oscillator generating unit, a complex waveform generating unit and an S-band point source; integrating the sub-function modules with repeated functions comprises: the crystal oscillator unit is used for generating a crystal oscillator signal, the crystal oscillator signal is divided into five paths through a first power divider, and a first path of the crystal oscillator signal is input into the Ka local oscillator generating unit, is frequency-synthesized through a first phase-locked loop, is input into the channel module through a first amplifier after being amplified by the first amplifier; a second path of the crystal oscillator signal is input into the passive wideband local oscillator generating unit, is divided into two paths through a second power divider, one of the two paths is input into the channel module through a first frequency converter and a second amplifier after being amplified by the second amplifier, and the other path is input into the channel module through a second frequency converter and a third amplifier after being amplified by the third amplifier; a third path of the crystal oscillator signal is input into the X / Ku local oscillator generating unit, is input into a fourth amplifier through a first switch, and is then input into the channel module through a second switch; a fourth path of the crystal oscillator signal is input into the S-band point source, is divided into two paths through a third power divider, and one of the two paths is input into the channel module through a third switch; a fifth path of the crystal oscillator signal is input into the complex waveform generating unit and a second phase-locked loop, and the fourth path of the crystal oscillator signal is divided into two paths through the third power divider, and the other path is input into an up-conversion module after being frequency-synthesized by the second phase-locked loop, is converted into a high-frequency signal, is input into the channel module through a fifth amplifier, a second switch and then the channel module.

2. The method of claim 1, wherein: the channel module comprises a wideband passive reconnaissance receiving unit, a Ka multi-channel transceiving unit and an X / Ku multi-channel transceiving unit, and the wideband passive reconnaissance receiving unit comprises a wideband multi-channel transceiving unit.

3. The method according to claim 2, wherein: the crystal oscillator unit is used for generating a crystal oscillator signal, the crystal oscillator signal is divided into five paths through a first power divider, and a first path of the crystal oscillator signal is input into the Ka local oscillator generating unit, is frequency-synthesized through a first phase-locked loop, is input into the Ka multi-channel transceiving unit through a first amplifier after being amplified by the first amplifier; a second path of the crystal oscillator signal is input into the passive wideband local oscillator generating unit, is divided into two paths through a second power divider, one of the two paths is input into the wideband multi-channel transceiving unit through a first frequency converter and a second amplifier after being amplified by the second amplifier, and the other path is input into the wideband multi-channel transceiving unit through a second frequency converter and a third amplifier after being amplified by the third amplifier; a third path of the crystal oscillator signal is input into the X / Ku local oscillator generating unit, is input into a fourth amplifier through a first switch, and is then input into the X / Ku multi-channel transceiving unit through a second switch. The fourth crystal oscillator signal input S-band point source, and is divided into two ways after the third power divider, one of which enters the X / Ku multi-channel transceiver unit through the third switch; The fifth road crystal oscillator signal input complex waveform generating unit after input second phase-locked loop, and the fourth road crystal oscillator signal input S-band point source, and is divided into two ways after the third power divider, another way input second phase-locked loop for frequency synthesis, input up converter components, into high frequency signal after conversion, through the fifth amplifier, through the second switch and then enter the X / Ku multi-channel transceiver unit.

4. The radar RF channel reconstruction method of investigation according to claim 3, characterized in that: The working state of each sub-function module is detected by the control core, including: The working state of the crystal oscillator unit, Ka local oscillator generating unit, passive broadband local oscillator generating unit, X / Ku local oscillator generating unit, complex waveform generating unit, S-band point source, broadband passive reconnaissance receiving unit, broadband multi-channel transceiver unit, Ka multi-channel transceiver unit, X / Ku multi-channel transceiver unit is detected by the control core; According to the received control instruction, the communication data is latched and decoded, and the current working state information is fed back to the signal processing extension, and the control instruction is sent based on the working state information.

5. The radar RF channel reconstruction method of investigation according to claim 4, characterized in that: Based on the function of the sub-function module, the function implementation unit in the sub-function module is configured, including: The broadband passive reconnaissance receiving unit is converted to 8-12GHz by the broadband multi-channel transceiver unit and is time division multiplexed with the X / Ku multi-channel transceiver unit; The Ka multi-channel transceiver unit and the X / Ku multi-channel transceiver unit work simultaneously: the Ka-band signal is converted to 8-18GHz by the agile frequency converter, and is multiplexed with the X / Ku-band signal in the X / Ku transceiver channel.

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