Detection platform and detection method of dual-band data link receiver

Abstract

The invention relates to the technical field of detection of dual-band data link receivers, in particular to a detection platform and a detection method of a dual-band data link receiver, which comprises a direct-current stabilized power supply, a switching unit, a function generator, a subcarrier frequency oscillating circuit, a power synthesizer, a microwave signal source, a spectrum analyzer, a digital oscilloscope and a digital multimeter, the direct-current stabilized power supply can be divided into a direct-current stabilized power supply I and a direct-current stabilized power supply II; the actual power-up process of the tested equipment product can be simulated, detection conditions are given, the electrical state change process of the equipment product in the test is controlled and detected, and the performance of the product is judged; meanwhile, the technical state of the equipment product can be quickly and accurately confirmed, and it is ensured that the repair task of the equipment product is smoothly completed; and the safety and reliability of the equipment are well ensured, and the use requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of dual-band data link receiver detection, and in particular to a dual-band data link receiver detection platform and detection method. Background Art

[0002] With the rapid development of modern high-tech equipment, higher requirements are placed on guidance technology. The aircraft weapon fire control system transmits target data, carrier data and key information for missile guidance to the missile through the data link. The fourth-generation active radar weapon equipment uses radio data link correction mid-range guidance and active radar terminal guidance to expand the missile's range and improve guidance accuracy. The dual-band data link receiver on the missile receives the correction signal sent by the carrier, amplifies and down-converts it, extracts the correction information from it, demodulates and shapes it, and then sends it to the computer for decoding processing.

[0003] During the maintenance of a certain type of equipment, it was found that the failure rate of the dual-band data link receiver was high and there was no testing method. In order to improve the repair capability of this type of equipment and deepen the repair depth, it was necessary to power on the dual-band data link receiver and simulate the guidance information sent by the carrier aircraft to test the dual-band data link receiver's decoding and shaping capabilities and other performance to determine the performance of the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a detection platform and detection method for a dual-band data link receiver. The detection platform and detection method can quickly realize the performance test of the dual-band data link receiver, solve the problem of locating the fault of the dual-band data link receiver, detect whether the dual-band data link receiver is normal, and provide a technical basis for maintenance personnel to troubleshoot.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A detection platform for a dual-band data link receiver comprises a DC stabilized power supply, a switching unit, a function generator, a subcarrier frequency oscillation circuit, a power synthesizer, a microwave signal source, a spectrum analyzer, a digital oscilloscope and a digital multimeter, wherein the DC stabilized power supply can be divided into a DC stabilized power supply I and a DC stabilized power supply II; the subcarrier frequency oscillation circuit comprises three groups of subcarrier frequency oscillators; the DC stabilized power supply is connected to the switching unit through a test line, the subcarrier frequency oscillation circuit generates F1, F2 and F3 subcarrier frequency signals, which are sent to the power synthesizer through a coaxial cable for synthesis and then to the function generator, which are sent to the microwave signal source for frequency modulation after amplitude modulation by the function generator, and the modulated signal is sent to the "BX" port of the dual-band data link receiver, the dual-band data link receiver is connected to the switching unit through two cables XS1 and XS2, and the spectrum analyzer, the digital oscilloscope and the digital multimeter are tested at corresponding pilot sites through test probes; The DC regulated power supply I is used to provide four working power supplies for the dual-band data link receiver, two working power supplies for the switching unit, and one working power supply for the subcarrier frequency oscillation circuit; the DC regulated power supply II provides a +5V working power supply for the dual-band data link receiver; The function generator, subcarrier frequency oscillation circuit, power synthesizer, and microwave signal source synthesize a radio correction signal for simulating a radio correction signal sent by a carrier aircraft; The adapter unit is connected to a DC regulated power supply and a dual-band data link receiver; the spectrum analyzer, digital oscilloscope, and digital multimeter are connected to the adapter unit and are used to measure the voltage, pulse width, and amplitude of various response signals output by the dual-band data link receiver.

[0006] Furthermore, the radio correction signal adopts "pulse code modulation-frequency modulation", and the modulated pulse is a bell-shaped pulse signal, which is equivalent to the square of the sine function, and its formation algorithm is: , Indicates the change of frequency offset over time within a code element range. is a symbol width, and t represents the period.

[0007] Furthermore, the implementation method of the radio correction signal is as follows: A1. In the "Arbitrary Waveform" edit menu of the function generator, follow the formula The "bell-shaped pulse" waveform is drawn by plotting points. To avoid spikes in the waveform, the number of plotting points for the "bell-shaped pulse" is selected to be 720, and the pulse waveform is phase-shifted by 180° to form a "bell-shaped pulse" waveform output; A2. Store the edited waveform in the "User3" file of the function generator; the three groups of subcarrier frequency oscillators correspond to the three subcarrier frequency signals generated by the three subcarrier frequency oscillators respectively, and are synthesized and outputted in the power synthesizer, and the amplitude modulation of the bell pulse signal and the subcarrier frequency signal is completed in the function generator; A3. The modulated signal is transmitted to the microwave signal source through a coaxial cable, where it is frequency modulated and finally forms a radio correction signal which is input to the BX interface of the dual-band data link receiver.

[0008] Furthermore, three groups of subcarrier oscillators correspond to subcarrier signals of three different frequencies respectively; the transistor V1, the crystal oscillator BQ1 and the surrounding components form a parallel crystal oscillator, and the generated subcarrier signal is coupled to the resonant amplification network composed of the transistor V2, the inductor L2, the capacitors C5 and C6 through the capacitor C4, and is output after frequency-selective amplification; the circuit forms of the F2 subcarrier oscillator and the F3 subcarrier oscillator are consistent with the F1 subcarrier oscillator circuit, and only the frequencies of the crystal oscillators BQ1, BQ2 and BQ3 are different.

[0009] Furthermore, the adapter unit includes a coarse adjustment voltage control circuit, a fine adjustment voltage control circuit and a dual-band data link receiver band selection instruction integrated inside, the coarse adjustment voltage control circuit and the fine adjustment voltage control circuit are used to form a control voltage, and the dual-band data link receiver band selection instruction controls the working frequency band selection; its implementation method is as follows: in the adapter unit, the +15V and -15V voltages output by the DC regulated power supply I are connected to the voltage regulator diodes and then stabilized to +10V and -10V, and then +10V and -10V are connected to a 47KΩ potentiometer and a 22KΩ potentiometer to achieve continuous adjustment of the DC voltage from -10V to +10V, and the analog seeker computer control voltage is used for the closed-loop control of the dual-band data link receiver VCO (i.e., the coarse adjustment control voltage UPG and the fine adjustment control voltage UPT).

[0010] Furthermore, the present invention also provides a detection method for a dual-band data link receiver, which is implemented based on a detection platform of the data link receiver and includes the following operations: S1. Method for checking simulated radio correction signal: connect a spectrum analyzer to a microwave signal source to detect the radio correction signal simulated by the microwave signal source; S2. Dual-band data link receiver sensitivity and dynamic range test method: Connect the dual-band data link receiver to the adapter unit, and measure the receiver sensitivity and dynamic range by adjusting the coarse control voltage UPG, the fine control voltage UPT and the radio correction signal power level; S3. Dual-band data link receiver demodulation capability test method: connect the dual-band data link receiver to the switching unit, and measure the maximum amplitude of the bell-shaped pulse by adjusting the coarse control voltage UPG and the fine control voltage UPT; S4. Test method for the symbol shaping restoration capability of a dual-band data link receiver: Connect the dual-band data link receiver to the switching unit, and measure the amplitude and pulse width of the comparator output pulse by adjusting the coarse control voltage UPG and the fine control voltage UPT.

[0011] The beneficial effects of the present invention are as follows: the detection platform and detection method of the dual-band data link receiver provided by the present invention can simulate the actual power-on process of the tested equipment product, provide detection conditions, control and detect the electrical state change process of the equipment product during the test, and judge the performance of the product; at the same time, it can quickly and accurately confirm the technical status of the equipment product, ensuring the smooth completion of the repair task of the equipment product. From the actual use effect of the tested product, the present invention is safe, convenient and fast to operate, ensuring the smooth progress of the product repair guarantee, and well ensuring the safety and reliability of the equipment, meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1A connection block diagram of a detection platform of a data link receiver in an embodiment of the present invention; Figure 2 Schematic diagram of the subcarrier signal oscillation circuit in an embodiment of the present invention; Figure 3 A coarse and fine voltage control circuit in a switching unit in an embodiment of the present invention; Figure 4 yes Figure 1 A schematic diagram of the layout of an adapter unit panel in an embodiment. DETAILED DESCRIPTION

[0013] Specific embodiment 1: The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that: in the present invention, if there is no special description, all the implementation methods and preferred implementation methods mentioned herein can be combined with each other to form a new technical solution. In the present invention, if there is no special description, all the technical features and preferred features mentioned herein can be combined with each other to form a new technical solution. The "scope" disclosed in the present invention can be in the form of a lower limit and an upper limit, which can be one or more lower limits, and one or more upper limits, respectively.

[0014] As the instruction manual Figure 1 As shown, a detection platform of a dual-band data link receiver of the present invention includes a DC regulated power supply (DC regulated power supply I and DC regulated power supply II), a switching unit, a spectrum analyzer, a digital oscilloscope, a digital multimeter, a function generator, a power synthesizer, a subcarrier oscillator, and a microwave signal source. The DC regulated power supply is used to provide +15V, -15V, +6V, -6V and +5V working power supplies for the adapter unit; the subcarrier frequency oscillation circuit includes 3 groups of subcarrier frequency oscillators; the DC regulated power supply is connected to the adapter unit through a test line, and the subcarrier frequency oscillation circuit generates F1, F2, and F3 subcarrier frequency signals, which are sent to the power synthesizer through a coaxial cable for synthesis and then sent to the function generator, and then sent to the microwave signal source for frequency modulation after amplitude modulation by the function generator, and the modulated signal is sent to the "BX" port of the dual-band data link receiver, and the dual-band data link receiver is connected to the adapter unit through two cables XS1 and XS2, and the spectrum analyzer, digital oscilloscope, and digital multimeter are tested at the corresponding pilot through test probes; As the instruction manual Figure 1As shown in the figure, the adapter unit is connected to the dual-band data link receiver through a 15-pin socket and a 37-pin socket. The 15-pin socket is labeled XS1, and the 37-pin socket is labeled XS2, which are installed on the dual-band data link receiver. The +15V, -15V, +6V, -6V, and +5V power supplies, coarse and fine voltage control, and output signals on the dual-band data link receiver are all connected to the adapter unit through XS2. The adapter unit includes a coarse and fine voltage control circuit and a frequency band selection instruction circuit integrated inside. The coarse and fine voltage control circuit is used to form the VCO local oscillator control voltage of the dual-band data link receiver, and the frequency band selection instruction of the dual-band data link receiver is used for working frequency band selection.

[0015] As shown in the attached Figure 2 figure, BQ1 is a crystal oscillator, and R1, R3, and R4 are the bias resistors of transistor V1; C3 and C7 are bypass capacitors to make the base of transistor V1 at AC zero potential. L1 is a loop inductor. The oscillation signal is sent to the base of the frequency selection amplifier V2 through the coupling capacitor C7. The amplified signal is sent from the collector of V3 to the resonant frequency selection loop composed of inductor L2, capacitor C5, and capacitor C6. Adjusting inductor L2 can make the loop resonate at the fundamental frequency. The oscillation signal is output through the coupling capacitor C8, resistor R7, and RP1 and sent to the power combiner; R5 and R6 are the bias resistors of transistor V2, and R2 is the emitter feedback resistor of transistor V2, which is used to stabilize the DC operating point.

[0016] As shown in the attached Figure 3 figure, the +15V and -15V output by the DC regulated power supply I are connected to the switches and then connected to resistors R1 and R2 respectively for current limiting. The outputs are connected to zener diodes D1 and zener diode D2 respectively. After being output by zener diode D1 and zener diode D2, they are connected to potentiometers R3 and R4. The adjustment terminal of R3 is connected to XS2-6, that is, the coarse adjustment control voltage UPG voltage is output, and the adjustment terminal of R4 outputs the fine adjustment control voltage UPT; when switch S1 is closed, XS1-12 is connected, and the receiver operates in the even frequency band; when switch S3 is closed, XS1-11 is connected, and the receiver operates in the odd frequency band.

[0017] The function generator, subcarrier oscillator, power combiner, and analog signal source are used to synthesize the radio correction signal; the method for forming the radio correction signal: Select the CH1 channel through the "CH1 / CH2" button of the function generator, and press the "Arbitrary Wave" button to select the "User3" waveform. Set the operation mode to the "Pulse" state, the signal period is one symbol width, the amplitude is 1Vpp, the signal source is "Internal", and the trigger interval is The width of the signal is two code elements; the F1, F2, and F3 signals output by the three subcarrier oscillators are output to the power synthesizer for addition synthesis and then output to the function generator for amplitude modulation with the bell pulse. The modulated signal is sent to the "EXT1" port of the microwave signal source. The frequency of the output signal of the microwave signal source is set to the 1# point frequency. The "FM" (frequency modulation) mode is selected. The modulation signal comes from the "EXT1" port. The "FM Dev" mode is selected to set the modulation depth.

[0018] The spectrum analyzer, digital oscilloscope and digital multimeter are connected to the switching unit and are used to measure the voltage, pulse width, amplitude and the like of various signals output by the dual-band data link receiver.

[0019] This embodiment further provides a dual-band data link receiver detection method, which is implemented based on the above dual-band data link receiver detection platform and includes the following steps: S1. Checking method of analog radio correction signal: Use spectrum analyzer to detect the radio correction signal simulated by analog signal source. When the equipment parameters are set correctly, the modulation power and carrier power suppression ratio is (-20±2) dB. If it does not meet the requirements, adjust the Figure 2 The resistance value of the potentiometer RP1 in the subcarrier signal oscillation circuit.

[0020] S2. Test method for sensitivity and dynamic range: Power the dual-band data link receiver, add the coarse control voltage UPG and the fine control voltage UPT to the XS2-6 and XS2-8 pins, input the correction signal of the signal frequency of 1#~5# frequency point at the "BX" port, add "low level" to the XS1-11 interface, that is, connect the odd frequency band control instruction, adjust the coarse control voltage UPG and the fine control voltage UPT, and observe the output signals of F1 detection, F2 detection and F3 detection. When the output of F1 detection, F2 detection and F3 detection is a bell-shaped pulse and the output amplitude is the largest, stop adjusting UPG and UPT. Reduce the power level of the radio correction signal until at least one of the output pulse widths of F1 comparator, F2 comparator and F3 comparator is less than 0.20ms or the output sequence has errors, and record the power level P0 of the radio correction signal input to port BX at this time, which is the sensitivity of the dual-band data link receiver when working in the odd frequency band. Increase the radio correction signal power level until at least one of the F1 comparator, F2 comparator and F3 comparator outputs a pulse width less than 0.20ms or has an error in the output sequence. Record the radio correction signal power level P1 input to port BX at this time. |P1-P0| is the dynamic range of the dual-band data link receiver when operating in an odd frequency band.

[0021] Power the dual - band data - link receiver. Input the correction signal of the 6# point frequency at the "BX" port. Apply the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT to the pins XS2 - 6 and XS2 - 8. Apply a "low level" to the XS1 - 12 interface to turn on the even - band control command. Adjust the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection. When the outputs of F1 detection, F2 detection, and F3 detection are bell - shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT. Reduce the power level of the radio correction signal until at least one of the outputs of the F1 comparator, F2 comparator, and F3 comparator has a pulse width < 0.20 ms or there is an error code in the output sequence. Record the power level P0 of the radio correction signal input to the port BX at this time, which is the sensitivity of the dual - band data - link receiver when operating in the even band. Increase the power level of the radio correction signal until at least one of the outputs of the F1 comparator, F2 comparator, and F3 comparator has a pulse width < 0.20 ms or there is an error code in the output sequence. Record the power level P1 of the radio correction signal input to the port BX at this time. |P1 - P0| is the dynamic range of the dual - band data - link receiver when operating in the even band.

[0022] S3. Test method for the demodulation ability of the dual - band data - link receiver: Power the dual - band data - link receiver. Apply the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT to the pins XS2 - 6 and XS2 - 8. Input the correction signal with a signal frequency of 1# - 5# point frequencies at the "BX" port. Apply a "low level" to the XS1 - 11 interface to turn on the odd - band control command. Adjust the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection. When the outputs of F1 detection, F2 detection, and F3 detection are bell - shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT. Record the amplitude of the bell - shaped pulse at this time.

[0023] S4. Test method for the symbol shaping ability of the dual - band data - link receiver: Power the dual - band data - link receiver. Apply the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT to the pins XS2 - 6 and XS2 - 8. Input the correction signal with a signal frequency of 1# - 5# point frequencies at the "BX" port. Apply a low level to the XS1 - 11 interface to turn on the odd - band control command. Adjust the coarse - tuning control voltage UPG and the fine - tuning control voltage UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection. When the outputs of F1 detection, F2 detection, and F3 detection are bell - shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT. Record the amplitude and pulse width of the output pulses of the F1 comparator, F2 comparator, and F3 comparator at this time.

[0024] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A detection platform for a dual-band data link receiver, characterized in that, It includes a DC stabilized power supply, a switching unit, a function generator, a subcarrier frequency oscillation circuit, a power synthesizer, a microwave signal source, a spectrum analyzer, a digital oscilloscope and a digital multimeter. The DC stabilized power supply is divided into a DC stabilized power supply I and a DC stabilized power supply II; the subcarrier frequency oscillation circuit includes 3 groups of subcarrier frequency oscillators; The DC regulated power supply is connected to the adapter unit through the test line. The subcarrier oscillation circuit generates F1, F2, and F3 subcarrier signals, which are sent to the power synthesizer through the coaxial cable for synthesis and then sent to the function generator. After amplitude modulation by the function generator, they are sent to the microwave signal source for frequency modulation. The modulated signal is sent to the "BX" port of the dual-band data link receiver. The dual-band data link receiver is connected to the adapter unit through the two cables XS1 and XS2. The spectrum analyzer, digital oscilloscope, and digital multimeter are tested at the corresponding pilot site through the test probe. The DC regulated power supply I is used to provide four working power supplies for the dual-band data link receiver, two working power supplies for the switching unit, and one working power supply for the subcarrier frequency oscillation circuit; the DC regulated power supply II provides a +5V working power supply for the dual-band data link receiver; The function generator, subcarrier frequency oscillation circuit, power synthesizer, and microwave signal source synthesize a radio correction signal for simulating a radio correction signal transmitted by a carrier aircraft to a missile; The adapter unit is connected to a DC regulated power supply and a dual-band data link receiver; the spectrum analyzer, digital oscilloscope, and digital multimeter are connected to the adapter unit and are used to measure the voltage, pulse width, and amplitude of various response signals output by the dual-band data link receiver.

2. The detection platform of a dual-band data link receiver according to claim 1, characterized in that The radio correction signal adopts "pulse code modulation - frequency modulation", and the modulation pulse is a bell-shaped pulse signal, which is equivalent to the square of the sine function. Its formation algorithm is , being the width of one symbol.

3. The detection platform of a dual-band data link receiver according to claim 2, characterized in that, The implementation method of the radio correction signal is as follows: A1. In the "Arbitrary Waveform" editing menu of the function generator, according to the formula Draw the "bell-shaped pulse" waveform by plotting points. To avoid spikes in the waveform, select 720 points for plotting the "bell-shaped pulse", and phase-shift the pulse waveform by 180° to form the output of the "bell-shaped pulse" waveform. A2. Store the edited waveform in the "User3" file of the function generator; the three groups of subcarrier frequency oscillators correspond to the three subcarrier frequency oscillators respectively, and the three subcarrier frequency signals generated by the three subcarrier frequency oscillators are synthesized and output in the power synthesizer, and the amplitude modulation of the bell pulse signal and the subcarrier frequency signal is completed in the function generator; A3. The modulated signal is transmitted to the microwave signal source through a coaxial cable, where it is frequency modulated and finally forms a radio correction signal which is sent to the BX interface of the dual-band data link receiver.

4. The detection platform of a dual-band data link receiver according to claim 3, characterized in that, The three groups of subcarrier oscillators correspond to three subcarrier signals of different frequencies respectively; the transistor V1, the crystal oscillator BQ1 and the surrounding components form a parallel crystal oscillator, and the generated subcarrier signal is coupled to the resonant amplification network composed of the transistor V2, the inductor L2, the capacitors C5 and C6 through the capacitor C4, and is output after frequency selection amplification; The circuit forms of F2 subcarrier oscillator and F3 subcarrier oscillator are consistent with that of F1 subcarrier oscillator, only the frequencies of crystal oscillators BQ1, BQ2 and BQ3 are different.

5. The detection platform of a dual-band data link receiver according to claim 1, characterized in that The adapter unit includes a coarse voltage control circuit, a fine voltage control circuit and a dual-band data link receiver band selection instruction integrated therein, the coarse voltage control circuit and the fine voltage control circuit are used to form a control voltage, and the dual-band data link receiver band selection instruction controls the working frequency band selection; its implementation method is as follows: in the adapter unit, the +15V and -15V voltages output by the DC regulated power supply I are connected to voltage stabilizing diodes to +10V and -10V respectively, and then +10V and -10V are connected to a 47KΩ potentiometer and a 22KΩ potentiometer to achieve continuous adjustment of the DC voltage from -10V to +10V, and the analog seeker computer control voltage is used for the closed-loop control of the dual-band data link receiver VCO, that is, the coarse control voltage UPG and the fine control voltage UPT.

6. A detection method for a dual-band data link receiver, which is implemented based on the detection platform of the data link receiver described in any one of the above claims 1-5, characterized in that, The following operations are included: S1. Method for checking simulated radio correction signal: connect a spectrum analyzer to a microwave signal source to detect the radio correction signal simulated by the microwave signal source; S2. Dual-band data link receiver sensitivity and dynamic range test method: Connect the dual-band data link receiver to the adapter unit, and measure the receiver sensitivity and dynamic range by adjusting the coarse control voltage UPG, the fine control voltage UPT and the radio correction signal power level; S3. Dual-band data link receiver demodulation capability test method: connect the dual-band data link receiver to the switching unit, and measure the maximum amplitude of the bell-shaped pulse by adjusting the coarse control voltage UPG and the fine control voltage UPT; S4. Test method for the symbol shaping restoration capability of a dual-band data link receiver: Connect the dual-band data link receiver to the switching unit, and measure the amplitude and pulse width of the comparator output pulse by adjusting the coarse control voltage UPG and the fine control voltage UPT.

7. The detection method of a dual-band data link receiver according to claim 6, characterized in that In S2, power the dual-band data link receiver, add the coarse control voltage UPG and the fine control voltage UPT to the XS2-6 and XS2-8 pins respectively, input the correction signal of the signal frequency of 1#~5# point frequency to the "BX" port, add "low level" to the XS1-11 interface, that is, connect the odd-band control instruction, adjust the coarse control voltage UPG and the fine control voltage UPT, and observe the output signals of F1 detection, F2 detection and F3 detection; when the output of F1 detection, F2 detection and F3 detection is a bell-shaped pulse and the output amplitude is the largest, stop adjusting UPG and UPT ; Reduce the radio correction signal power level until at least one of the F1 comparator, F2 comparator and F3 comparator outputs a pulse width of less than 0.20ms or has a bit error in the output sequence, and record the radio correction signal power level P0 input to port BX at this time, which is the sensitivity of the dual-band data link receiver when working in the odd frequency band; increase the radio correction signal power level until at least one of the F1 comparator, F2 comparator and F3 comparator outputs a pulse width of less than 0.20ms or has a bit error in the output sequence, and record the radio correction signal power level P1 input to port BX at this time, | P1- P0| is the dynamic range of the dual-band data link receiver when working in the odd frequency band.

8. The detection method of a dual-band data link receiver according to claim 6, characterized in that, In S2, power on the dual-band data link receiver, input a correction signal with a signal frequency of 6# point frequency at the "BX" port, apply a coarse adjustment control voltage UPG and a fine adjustment control voltage UPT to pins XS2-6 and XS2-8 respectively, apply a "low level" to the XS1-12 interface to turn on the even-band control instruction, adjust the coarse adjustment control voltage UPG and the fine adjustment control voltage UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection; when the outputs of F1 detection, F2 detection, and F3 detection are bell-shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT; reduce the power level of the radio correction signal until the pulse width of at least one of the F1 comparator, F2 comparator, and F3 comparator is <0.20 ms or there is an error code in the output sequence, and record the power level P0 of the radio correction signal input to port BX at this time, which is the sensitivity of the dual-band data link receiver when operating in the even band; increase the power level of the radio correction signal until the pulse width of at least one of the F1 comparator, F2 comparator, and F3 comparator is <0.20 ms or there is an error code in the output sequence, and record the power level P1 of the radio correction signal input to port BX at this time, and |P1 - P0| is the dynamic range of the dual-band data link receiver when operating in the odd band.

9. The detection method of a dual-band data link receiver according to claim 6, characterized in that In S3, power on the dual-band data link receiver, apply a coarse adjustment control voltage UPG and a fine adjustment control voltage UPT to pins XS2-6 and XS2-8, input a correction signal with a signal frequency of 1# - 5# point frequency at the "BX" port, apply a "low level" to the XS1-11 interface to turn on the odd-band control instruction, adjust the control voltages UPG and UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection; when the outputs of F1 detection, F2 detection, and F3 detection are bell-shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT; record the amplitude of the bell-shaped pulse at this time.

10. The detection method of a dual-band data link receiver according to claim 6, characterized in that, Power on the dual-band data link receiver, apply a coarse adjustment control voltage UPG and a fine adjustment control voltage UPT to pins XS2-6 and XS2-8, input a correction signal with a signal frequency of 1# - 5# point frequency at the "BX" port, apply a low level to the XS1-11 interface to turn on the odd-band control instruction, adjust the coarse adjustment control voltage UPG and the fine adjustment control voltage UPT, and observe the output signals of F1 detection, F2 detection, and F3 detection; when the outputs of F1 detection, F2 detection, and F3 detection are bell-shaped pulses and the output amplitude is the largest, stop adjusting UPG and UPT; record the amplitude and pulse width of the output pulses of the F1 comparator, F2 comparator, and F3 comparator at this time.

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