An Adaptive TACAN Signal Generation Device and Method

Abstract

The present invention discloses an adaptive TACAN signal generating device and method, relating to the technical field of TACAN signal debugging. The device includes a preamplifier, a first isolator, a final power amplifier PA, a second isolator, a coupler, a processor, and a grid voltage generating circuit; it further includes a digital potentiometer and a signal feedback circuit; the device obtains the current pulse waveform sampled back by the ADC based on the signal feedback circuit, compares the current pulse waveform with the TACAN waveform, and continuously and automatically adjusts the output voltage of the digital potentiometer and the output signal amplitude of the grid voltage generating circuit until the output pulse waveform meets the requirements of the TACAN waveform. The present invention solves the problems of insufficient control accuracy, large modulation workload, and heavy human subjective factors in the existing methods; at the same time, the signal feedback circuit can also be used as a detection circuit for the health status of the generating device.

Description

Technical Field

[0001] The present invention relates to the technical field of TACAN signal debugging, and particularly relates to an adaptive TACAN signal generating device and method. Background Art

[0002] TACAN is the abbreviation of Tactical Air Navigation, and it is the world's first system to provide both azimuth and distance information for aircraft. The TACAN system consists of a ground station and airborne equipment, and it is a pulse system operating at 960 MHz to 1215 MHz. The waveform of the TACAN system adopts a standard Gaussian pulse waveform. As Figure 1 shown, most current TACAN transmitting devices are implemented by modulating the final-stage high-power power amplifier, and the transmitting power ranges from hundreds of watts to kilowatts.

[0003] Due to the individual differences of high-power power amplifier tubes, the traditional generation method has disadvantages such as waveform distortion, large influence by temperature drift, and large debugging workload. In order to ensure that the output waveform meets the standard, it is necessary to continuously adjust the grid voltage amplitude of the final-stage power amplifier tube.

[0004] As Figure 2 shown, Figure 2 is a schematic diagram of a conventional TACAN signal transmitting device. The debugging and calibration method based on this transmitting device is divided into the following steps:

[0005] 1) Taking frequency and temperature as variables, according to the output waveform of the transmitting device, change the compensation attenuation value (adjust the input power of the final-stage power amplifier) and the grid voltage amplitude of the final-stage power amplifier in the transmitting device.

[0006] 2) Manually read whether the output waveform of the transmitting device meets the TACAN standard requirements. If the waveform does not meet the requirements, repeat step 1); if it meets the requirements, write the adjusted value into the memory.

[0007] 3) Change the frequency and temperature, and repeat steps 1) and 2), covering all frequency points and temperatures.

[0008] 4) During normal operation, according to the frequency and temperature, read the adjusted value in the memory to make the transmitted output satisfy the pulse waveform required by the TACAN standard.

[0009] The above method has insufficient control accuracy (the control accuracy of the attenuator is generally 0.5 dB), large debugging workload, strong human subjective factors, often problems such as incomplete coverage of adjusted values, and a certain deviation between the final output waveform and the ideal waveform.

[0010] In view of this, the present application is specifically proposed. Summary of the Invention

[0011] The object of the present invention is to provide an adaptive TACAN signal generation device and method. Based on the original circuit, the preamplification link is optimized, and a signal feedback circuit is added to achieve the detection and adaptive adjustment of high-power output waveforms. The present invention solves the problems of insufficient control accuracy, large modulation workload, and heavy human subjective factors in the existing methods; at the same time, the signal feedback circuit can also be used as a detection circuit for the health status of the generation device.

[0012] The present invention is realized through the following technical solutions:

[0013] In the first aspect, the present invention provides an adaptive TACAN signal generation device, which includes a preamplifier, a first isolator, a final power amplifier PA, a second isolator, a coupler, a processor, and a grid voltage generation circuit. The preamplifier, the first isolator, the final power amplifier PA, the second isolator, and the coupler are connected in sequence; the processor is connected to the grid voltage generation circuit, and the grid voltage generation circuit is connected to the grid of the final power amplifier PA;

[0014] It further includes a digital potentiometer, one end of the digital potentiometer is connected to the processor, and the other end is connected to the preamplifier;

[0015] It further includes a signal feedback circuit, one end of the signal feedback circuit is connected to the coupler, and the other end is connected to the processor;

[0016] The device obtains the current pulse waveform collected by the ADC based on the signal feedback circuit, compares the current pulse waveform with the TACAN waveform, and continuously automatically adjusts the output voltage of the digital potentiometer and the output signal amplitude of the grid voltage generation circuit until the output pulse waveform meets the requirements of the TACAN waveform; among them, the TACAN waveform is a standard Gaussian pulse waveform.

[0017] Furthermore, the device further includes a memory, the memory is connected to the processor, and is used to store the adjustment values that meet the requirements of the TACAN waveform, and during normal operation, the processor can call the adjustment values.

[0018] Furthermore, the signal feedback circuit includes an analog-to-digital converter ADC and a detector, one end of the detector is connected to the output end of the coupler, the other end is connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is connected to the processor.

[0019] Furthermore, the grid voltage generation circuit includes a digital-to-analog converter DAC and an operational amplifier, one end of the digital-to-analog converter DAC is connected to the processor, the other end is connected to the operational amplifier, and the operational amplifier is connected to the grid of the final power amplifier PA.

[0020] In the second aspect, the present invention further provides an adaptive TACAN signal generation method, which is based on the above-mentioned adaptive TACAN signal generation device, and the method includes:

[0021] S1: The processor initializes the control signal to obtain the initial control signal; the initial control signal includes the digital potentiometer output voltage configuration data and the DAC data of the grid voltage generation circuit.

[0022] S2: The processor obtains the pulse waveform collected by the ADC from the signal feedback circuit, and based on the pulse waveform collected by the ADC, performs multiple averaging to generate the pulse power amplitude corresponding to the final-stage power amplifier PA.

[0023] S3: Determine whether the pulse power amplitude meets the requirements. If the pulse power amplitude does not meet the requirements, adjust the digital potentiometer output voltage.

[0024] S4: If the pulse power amplitude meets the requirements, maintain the current digital potentiometer output voltage, and use the three-segment method to calculate and generate a set of DAC data, and successively determine whether the pulse width, rising edge, and falling edge of the device output signal meet the requirements and perform grid voltage adjustment according to the pulse waveform collected by the ADC.

[0025] S5: According to the current temperature and frequency, store the digital potentiometer output voltage and DAC data that meet the requirements in the memory.

[0026] S6: By changing the frequency and / or temperature, repeat the above steps S1 to S5 to traverse all frequency segments and / or temperature segments.

[0027] S7: When powered on, retrieve the data in the corresponding memory according to the frequency and / or temperature.

[0028] Further, step S1 includes:

[0029] The processor controls the digital potentiometer to generate the output voltage of the digital potentiometer.

[0030] At the same time, the processor controls the grid voltage generation circuit to generate DAC data with a pulse width of a preset pulse width value.

[0031] The above technical solution adaptively adjusts the power pulse output waveform without manual intervention.

[0032] Further, adjusting the digital potentiometer output voltage in step S3 includes:

[0033] According to the current pulse power amplitude, increase or decrease the digital potentiometer output voltage in preset steps.

[0034] Repeat steps S1 to S3. When the pulse power amplitude of the final-stage power amplifier PA meets the requirements, record the current adjustment value of the digital potentiometer.

[0035] Further, in step S4, a set of DAC data is calculated and generated by using a three-segment method, and whether the pulse width, rising edge, and falling edge of the device output signal meet the requirements are sequentially judged according to the pulse waveform collected by the ADC, and the grid voltage is adjusted, including:

[0036] A: The processor calculates and generates a set of DAC data by using the three-segment method according to the standard waveform signal formula; the first segment data in the three-segment method is the duration from the start of the signal to the half-power value of the rising edge, that is, from 0 - 0.5a (rising edge), where a is the peak power of the output pulse signal, and the first standard deviation is , which is used to adjust the rising edge of the output pulse; the second segment data is the duration from the half-power value of the rising edge to the half-power value of the falling edge, that is, from 0.5a (output pulse rising edge) - 0.5a (output pulse falling edge), and the second standard deviation is , which is used to adjust the pulse width; the third segment data is the duration from the half-power value of the falling edge to the end of the signal, that is, from 0.5a - 0 (falling edge), where a is the peak power of the output pulse signal, and the third standard deviation is , which is used to adjust the falling edge of the output pulse;

[0037] B: According to the pulse waveform collected by the ADC, judge whether the pulse width of the device output signal meets the first preset value; if not, change the magnitude of the second standard deviation in the standard waveform signal formula until the pulse width of the device output signal meets the first preset value, and record the DAC data of the current second segment data;

[0038] C: According to the pulse waveform collected by the ADC, judge whether the rising edge (the time required for the peak power to reach 10% - 90%) of the device output signal meets the second preset value; if not, change the magnitude of the first standard deviation in the standard waveform signal formula to adjust the time of the rising edge until the rising edge of the device output signal meets the second preset value, and record the DAC data of the current first segment data;

[0039] D: According to the pulse waveform collected by the ADC, judge whether the falling edge (the time required for the peak power to reach 90% - 10%) of the device output signal meets the third preset value; if not, change the magnitude of the third standard deviation in the standard waveform signal formula to adjust the time of the falling edge until the falling edge of the device output signal meets the third preset value, and record the DAC data of the current third segment data;

[0040] E: Generate a set of DAC data according to the DAC data of the current second segment data, the DAC data of the current first segment data, and the DAC data of the current third segment data.

[0041] Further, the standard waveform signal formula is:

[0042] ;

[0043] Wherein, is the value of the representative signal at time t ; is the amplitude, i.e., the maximum value of the signal; is the base of the natural logarithm; is the time; is the central position, i.e., the t value corresponding to when the signal reaches the maximum value; is the standard deviation, which determines the width of the signal.

[0044] Furthermore, the first preset value is 3.5us ± 0.5us; the second preset value is 2.5us; the third preset value is 3us.

[0045] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0046] An adaptive TACAN signal generation device and method of the present invention optimizes the preamplification link and adds a signal feedback circuit on the basis of the original circuit, and can realize the detection and adaptive adjustment of high-power output waveforms. The present invention solves the problems of insufficient control accuracy, large modulation workload, and heavy human subjective factors in the existing methods; at the same time, the signal feedback circuit can also be used as a detection circuit for the health status of the generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0048] Figure 1 is a standard Gaussian pulse waveform;

[0049] Figure 2 is a schematic diagram of a conventional TACAN signal transmitting device;

[0050] Figure 3 is a schematic diagram of an adaptive TACAN signal generation device of the present invention;

[0051] Figure 4 is a flowchart of an adaptive TACAN signal generation method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] Hereinafter, the term "comprising" or "may comprise" that may be used in various embodiments of the present invention indicates the presence of an invented function, operation, or element, and does not limit the addition of one or more functions, operations, or elements. Further, as used in various embodiments of the present invention, the terms "comprising", "having", and their cognates are only intended to represent a specific feature, number, step, operation, element, component, or combination of the foregoing items, and should not be construed as precluding the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing items first.

[0053] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the recited words. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0054] Expressions (such as "first", "second", etc.) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but do not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device indicate different user devices, although both are user devices. For example, without departing from the scope of various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0055] It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. Conversely, when one constituent element is "directly connected" to another constituent element, it can be understood that there is no third constituent element between the first constituent element and the second constituent element.

[0056] The terms used in various embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit various embodiments of the present invention. As used herein, the singular form is also intended to include the plural form unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which various embodiments of the present invention pertain. The terms (such as those defined in a commonly used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in various embodiments of the present invention.

[0057] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0058] Most current transmitting devices are implemented using a final-stage PA modulation method. The Gaussian pulse output waveform of the transmitting device is related to the RF input power, the output power of the preamplifier, and the PA gate voltage. The nominal value of the input range (i.e., the input of the excitation small signal) is generally within ±3 dB. The present invention adjusts the output voltage of the digital potentiometer, changes the amplification factor of the preamplifier, and controls the power input range of the final-stage power amplifier. The final-stage power amplifier PA generally selects a GaN amplifier in the kilowatt range. By controlling its gate voltage waveform, the final output waveform is adjusted to output a high-power signal.

[0059] The core of the present invention is to obtain the final output pulse waveform sampled back by the ADC based on the signal feedback circuit, find the deviation from the standard waveform, and control the output voltage of the digital potentiometer (as a variable voltage-dividing circuit) and the gate voltage amplitude of the final-stage power amplifier PA, so that the high-power output signal of the device meets the Gaussian pulse requirements.

[0060] Embodiment 1

[0061] As Figure 3 shown, Figure 3 is a schematic diagram of an adaptive TACAN signal generation device of the present invention;

[0062] An adaptive TACAN signal generation device of the present invention, the device includes a preamplifier, a first isolator, a final-stage power amplifier PA, a second isolator, a coupler, a processor, and a gate voltage generation circuit. The preamplifier, the first isolator, the final-stage power amplifier PA, the second isolator, and the coupler are connected in sequence; the processor is connected to the gate voltage generation circuit, and the gate voltage generation circuit is connected to the gate of the final-stage power amplifier PA;

[0063] It further includes a digital potentiometer, one end of the digital potentiometer is connected to the processor, and the other end is connected to the preamplifier;

[0064] It further includes a signal feedback circuit, one end of the signal feedback circuit is connected to the coupler, and the other end is connected to the processor;

[0065] It further includes a memory, the memory is connected to the processor, and is used to store the adjustment values that meet the TACAN waveform requirements, and during normal operation, the processor can call the adjustment values; wherein, the TACAN waveform is a standard Gaussian pulse waveform.

[0066] The device acquires the current pulse waveform sampled by the ADC based on the signal feedback circuit, compares the current pulse waveform with the TACAN waveform, and continuously and automatically adjusts the output voltage of the digital potentiometer and the output signal amplitude of the DAC in the grid voltage generation circuit until the output pulse waveform meets the requirements of the TACAN waveform. Then, the adjustment values that meet the TACAN waveform requirements are stored in the memory, and during normal operation, the processor can call the adjustment values stored in the memory.

[0067] In this embodiment, the signal feedback circuit includes an analog-to-digital converter ADC and a detector. One end of the detector is connected to the output end of the coupler, and the other end is connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is connected to the processor. Specifically, the detector is used to perform detection processing on the analog signal output by the coupler to obtain the detected voltage signal; the analog-to-digital converter ADC is used to perform analog-to-digital conversion on the detected voltage signal, that is, to acquire the current pulse waveform sampled by the ADC.

[0068] In this embodiment, the grid voltage generation circuit includes a digital-to-analog converter DAC and an operational amplifier PB. One end of the digital-to-analog converter DAC is connected to the processor, and the other end is connected to the operational amplifier PB, and the operational amplifier PB is connected to the grid of the final power amplifier PA. Specifically, the grid voltage generation circuit is the same as the setting in the conventional TACAN signal transmitting device, and will not be elaborated here one by one.

[0069] In this embodiment, a temperature sensor is also provided near the final power amplifier PA, and the temperature sensor is connected to the processor.

[0070] Based on the original circuit, the present invention optimizes the preamplification link and adds a signal feedback circuit, which can realize the index detection and adaptive adjustment of the high-power output waveform. Specifically, by continuously comparing the difference between the current output pulse waveform of the coupler and the standard Gaussian pulse waveform, the output voltage of the digital potentiometer and the output signal amplitude of the DAC in the grid voltage generation circuit are automatically adjusted until the output pulse waveform (i.e., the high-power signal output) meets the requirements of the TACAN waveform.

[0071] Embodiment 2

[0072] As Figure 4 shown, Figure 4 is a flowchart of an adaptive TACAN signal generation method of the present invention; the difference between this embodiment and Embodiment 1 is that this embodiment provides an adaptive TACAN signal generation method, which is based on an adaptive TACAN signal generation device in Embodiment 1, and the method includes:

[0073] S1: The processor initializes the control signal to obtain an initial control signal; the initial control signal includes the digital potentiometer output voltage configuration data and the DAC data of the grid voltage generation circuit;

[0074] Specifically, step S1 includes:

[0075] The processor controls the digital potentiometer to generate an output voltage of the digital potentiometer;

[0076] Meanwhile, the processor controls the grid voltage generation circuit to generate DAC data with a pulse width of a preset pulse width value.

[0077] In this embodiment, the processor controls the digital potentiometer to generate an output voltage of +5V (the recommended power supply voltage for the preamplifier) of the digital potentiometer, and controls the grid voltage generation circuit to generate DAC data of 0xFFF with a pulse width of 6us (duty cycle 1%) (the DAC data is 0x000 for the rest of the time).

[0078] S2: The processor obtains the pulse waveform sampled back by the ADC from the signal feedback circuit, and based on the pulse waveform sampled back by the ADC, performs multiple averages to generate the pulse power amplitude corresponding to the final power amplifier PA;

[0079] S3: Determine whether the pulse power amplitude meets the requirements. If the pulse power amplitude does not meet the requirements, adjust the output voltage of the digital potentiometer;

[0080] In this embodiment, adjusting the output voltage of the digital potentiometer in step S3 includes:

[0081] According to the current pulse power amplitude, with a step of 0.1V (the minimum resolution of the digital potentiometer is 5.5V / 1024≈0.005V), increase or decrease the output voltage of the digital potentiometer;

[0082] Repeat steps S1 to S3. When the pulse power amplitude of the final power amplifier PA meets the requirements, record the adjustment value of the current digital potentiometer.

[0083] S4: If the pulse power amplitude meets the requirements, keep the current output voltage of the digital potentiometer, and use the three-segment method to calculate and generate a set of DAC data, and successively determine whether the pulse width, rising edge, and falling edge of the output signal of the device meet the requirements and perform grid voltage adjustment according to the pulse waveform sampled back by the ADC;

[0084] In this embodiment, step S4 includes:

[0085] A: The processor calculates and generates a set of DAC data using the three-segment method according to the standard waveform signal formula, and the output voltage of the digital potentiometer remains unchanged; as Figure 1 shown, the first segment of data in the three-segment method is the duration from the start of the signal to the half-power value of the rising edge, that is, from 0 - 0.5a (rising edge), a is the peak power of the output pulse signal, and the first standard deviation is , for adjusting the rising edge of the output pulse; the second segment of data is the duration from the half-power value of the rising edge to the half-power value of the falling edge, that is, from 0.5a (rising edge of the output pulse) - 0.5a (falling edge of the output pulse), and the second standard deviation is , for adjusting the pulse width; the third segment of data is the duration from the half-power value of the falling edge to the end of the signal, that is, from 0.5a - 0 (falling edge), where a is the peak power of the output pulse signal, and the third standard deviation is , for adjusting the falling edge of the output pulse;

[0086] Specifically, the standard waveform signal formula is:

[0087] ;

[0088] Wherein, represents the value of the signal at time t ; is the amplitude, that is, the maximum value of the signal; is the base of the natural logarithm; is the time; is the center position, that is, the corresponding t value when the signal reaches the maximum value; is the standard deviation, which determines the width of the signal.

[0089] B: According to the pulse waveform collected by the ADC, determine whether the pulse width of the device output signal meets the first preset value, and the first preset value is 3.5us ± 0.5us; if not, change the second standard deviation in the standard waveform signal formula The larger the , the larger the pulse width, The smaller the

[0090] C: According to the pulse waveform collected by the ADC, determine whether the rising edge of the device output signal meets the second preset value, and the second preset value is 2.5us; if not, change the first standard deviation in the standard waveform signal formula to adjust the time of the rising edge until the rising edge of the device output signal meets the second preset value, and record the DAC data of the current first segment of data;

[0091] D: According to the pulse waveform collected by the ADC, determine whether the falling edge of the device output signal meets the third preset value, and the third preset value is 3us; if not, change the third standard deviation in the standard waveform signal formula to adjust the time of the falling edge until the falling edge of the device output signal meets the third preset value, and record the DAC data of the current third segment of data;

[0092] E: Generate a set of DAC data based on the DAC data of the current second - stage data, the DAC data of the current first - stage data, and the DAC data of the current third - stage data.

[0093] S5: According to the current temperature and frequency, store the output voltage of the digital potentiometer that meets the requirements and the DAC data in the memory. For example, it can be stored in the corresponding address of the FLASH.

[0094] S6: By changing the frequency and / or temperature, repeat the above steps S1 to S5 to traverse all frequency segments and / or temperature segments.

[0095] In this embodiment, (1) change the frequency point, repeat steps S1 to S5 to traverse all frequency bands (one frequency band is 10 MHz).

[0096] (2) Change the temperature, repeat steps S1 to S5 to traverse all temperature segments (one temperature segment is 10 °C).

[0097] S7: When powered on, retrieve the data in the corresponding memory according to the current frequency and / or temperature.

[0098] In the above - mentioned technical solution, an adaptive TACAN signal generation method can automatically compare the difference between the output pulse waveform and the standard Gaussian pulse waveform, dynamically adjust the state of the device, and perform precise secondary adjustment according to the quality of the output waveform before and after adjustment, thus accelerating the debugging progress. This method is fully automated for debugging, reducing the debugging workload and avoiding the interference of human factors to the greatest extent.

[0099] In the specific implementation manners described above, the purpose, technical solution, and beneficial effects of the present invention are further described in detail. It should be understood that the above - mentioned are only the specific implementation manners of the present invention and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive TACAN signal generating device, characterized in that The device includes a preamplifier, a first isolator, a final power amplifier PA, a second isolator, a coupler, a processor, and a grid voltage generation circuit. The preamplifier, the first isolator, the final power amplifier PA, the second isolator, and the coupler are connected in sequence. The processor is connected to the grid voltage generation circuit, and the grid voltage generation circuit is connected to the grid of the final power amplifier PA. It further includes a digital potentiometer. One end of the digital potentiometer is connected to the processor, and the other end is connected to the preamplifier. It further includes a signal feedback circuit. One end of the signal feedback circuit is connected to the coupler, and the other end is connected to the processor. Based on the signal feedback circuit, the device acquires the current pulse waveform sampled by the ADC, compares the current pulse waveform with the TACAN waveform, and continuously and automatically adjusts the output voltage of the digital potentiometer and the output signal amplitude of the DAC in the grid voltage generation circuit until the output pulse waveform meets the requirements of the TACAN waveform. Among them, the TACAN waveform is a standard Gaussian pulse waveform.

2. The adaptive TACAN signal generating device according to claim 1, wherein The device further includes a memory. The memory is connected to the processor and is used to store the adjustment values that meet the requirements of the TACAN waveform. During normal operation, the processor can call the adjustment values.

3. An adaptive TACAN signal generating device according to claim 1, characterized in that, The signal feedback circuit includes an analog-to-digital converter ADC and a detector. One end of the detector is connected to the output end of the coupler, the other end is connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is connected to the processor.

4. An adaptive TACAN signal generating device according to claim 1, characterized in that The grid voltage generation circuit includes a digital-to-analog converter DAC and an operational amplifier. One end of the digital-to-analog converter DAC is connected to the processor, the other end is connected to the operational amplifier, and the operational amplifier is connected to the grid of the final power amplifier PA.

5. An adaptive TACAN signal generation method, characterized in that, The method includes: S1: The processor initializes the control signal to obtain an initial control signal. The initial control signal includes the output voltage configuration data of the digital potentiometer and the DAC data of the grid voltage generation circuit. S2: The processor acquires the pulse waveform sampled by the ADC from the signal feedback circuit, and based on the pulse waveform sampled by the ADC, performs multiple averaging to generate the pulse power amplitude corresponding to the final power amplifier PA. S3: Judge whether the pulse power amplitude meets the requirements. If the pulse power amplitude does not meet the requirements, adjust the output voltage of the digital potentiometer. S4: If the pulse power amplitude meets the requirements, keep the current output voltage of the digital potentiometer, and use the three-segment method to calculate and generate a set of DAC data, and judge whether the pulse width, rising edge, and falling edge of the output signal of the device meet the requirements in sequence based on the pulse waveform sampled by the ADC and perform grid voltage adjustment. S5: According to the current temperature and frequency, store the output voltage of the digital potentiometer and the DAC data that meet the requirements in the memory. S6: By changing the frequency and / or temperature, repeat the above steps S1 to S5 to traverse all frequency segments and / or temperature segments. S7: When powered on, retrieve the corresponding data in the memory according to the frequency and / or temperature.

6. An adaptive TACAN signal generation method according to claim 5, characterized in that Step S1 includes: The processor controls the digital potentiometer to generate the output voltage of the digital potentiometer. At the same time, the processor controls the grid voltage generation circuit to generate DAC data with a pulse width of a preset pulse width value.

7. An adaptive TACAN signal generation method according to claim 5, characterized in that, In step S3, adjusting the output voltage of the digital potentiometer includes: Increase or decrease the output voltage of the digital potentiometer in a preset step according to the current pulse power amplitude; Repeat steps S1 to S3. When the pulse power amplitude of the final power amplifier PA meets the requirements, record the adjustment value of the current digital potentiometer.

8. An adaptive TACAN signal generation method according to claim 5, characterized in that In step S4, a set of DAC data is calculated and generated by the three-segment method, and whether the pulse width, rising edge, and falling edge of the device output signal meet the requirements are judged in turn according to the pulse waveform collected by the ADC, and the grid voltage is adjusted, including: A: The processor calculates and generates a set of DAC data by the three-segment method according to the standard waveform signal formula; the first segment data in the three-segment method is the duration from the start of the signal to the half-power value of the rising edge, and the first standard deviation is σ1; the second segment data is the duration from the half-power value of the rising edge to the half-power value of the falling edge, and the second standard deviation is σ2; the third segment data is the duration from the half-power value of the falling edge to the end of the signal, and the third standard deviation is σ3; B: According to the pulse waveform collected by the ADC, judge whether the pulse width of the device output signal meets the first preset value; if not, change the size of the second standard deviation in the standard waveform signal formula until the first preset value is met, and record the DAC data of the current second segment data; C: According to the pulse waveform collected by the ADC, judge whether the rising edge of the device output signal meets the second preset value; if not, change the size of the first standard deviation in the standard waveform signal formula to adjust the time of the rising edge until the second preset value is met, and record the DAC data of the current first segment data; D: According to the pulse waveform collected by the ADC, judge whether the falling edge of the device output signal meets the third preset value; if not, change the size of the third standard deviation in the standard waveform signal formula to adjust the time of the falling edge until the third preset value is met, and record the DAC data of the current third segment data; E: Generate a set of DAC data according to the DAC data of the current second segment data, the DAC data of the current first segment data, and the DAC data of the current third segment data.

9. An adaptive TACAN signal generation method according to claim 8, characterized in that, The standard waveform signal formula is: where x (t) is the value of the representative signal at time t; A is the amplitude, i.e., the maximum value of the signal; e is the base of the natural logarithm; t is the time; t0 is the central position, i.e., the t value corresponding to when the signal reaches its maximum value; σ is the standard deviation, which determines the width of the signal.

10. An adaptive TACAN signal generation method according to claim 8, characterized in that, The first preset value is 3.5us ± 0.5us; the second preset value is 2.5us; the third preset value is 3us.

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