Polar coordinate based rangefinder launch device and method

Abstract

The application discloses a polar coordinate-based range finder transmitting device and method. The device comprises a baseband signal processing module, an amplitude drive control module, a phase signal processing module and a power amplification module. The baseband signal processing module obtains a baseband signal, and generates amplitude and phase signals through decomposition and conversion, and transmits the signals to the amplitude drive control module and the phase signal processing module respectively. The amplitude drive control module performs pulse width modulation and voltage amplification on the amplitude signal to obtain a pulse width modulation signal. The phase signal processing module performs phase offset and digital-to-analog conversion on the phase signal to obtain a radio frequency signal. The power amplification module receives the pulse width modulation signal and the radio frequency signal, and transmits a target transmitting signal after drain amplification and switch mode amplification. Through dual-mode amplification, the efficiency of the device is improved, the heat of the device is reduced, and the reliability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of navigation technology, and in particular to a polar coordinate-based distance measuring equipment (DME) transmitter and method. BACKGROUND

[0002] A distance measuring equipment (DME) is a ground-based navigation system based on the interrogation and response technology, which measures the distance by timing the propagation delay of radio signals. In a conventional distance measuring navigation scenario, an airborne device sends an interrogation pulse pair, a ground device responds after a delay, and the airborne device calculates the time difference to determine the slant range of the aircraft from the ground station to provide navigation functions. The DME transmitter of the prior art adopts a quadrature architecture, which converts the original baseband signal into two parallel branches of in-phase and quadrature, and then performs quadrature modulation and amplification using a power amplifier. However, the existing DME transmitter has a large transmission power, which results in a high operating temperature of the DME transmitter, thereby reducing the reliability of the DME transmitter. In addition, in order to ensure linearity, the existing DME transmitter adopts a power backoff technology, which results in a large volume and low transmission efficiency of the DME transmitter.

[0003] Therefore, how to reduce the operating temperature of the DME transmitter and improve the transmission efficiency and reliability is a problem to be solved. SUMMARY

[0004] Therefore, the polar coordinate-based DME transmitter and method provided by the embodiments of the present application can reduce the operating temperature of the DME transmitter and improve the transmission efficiency and reliability. The polar coordinate-based DME transmitter and method provided by the embodiments of the present application are implemented as follows:

[0005] The polar coordinate-based DME transmitter provided by the embodiments of the present application comprises a baseband signal processing module, an amplitude drive control module, a phase signal processing module, and a power amplification module. The baseband signal processing module is connected with the amplitude drive control module and the phase signal processing module, and the amplitude drive control module and the phase signal processing module are further connected with the power amplification module. Specifically, the baseband signal processing module is configured to obtain a baseband signal, decompose and convert the baseband signal, generate an amplitude signal and a phase signal, and send the amplitude signal to the amplitude drive control module and the phase signal to the phase signal processing module.

[0006] The baseband signal processing module is configured to obtain a baseband signal, decompose and convert the baseband signal, generate an amplitude signal and a phase signal, and send the amplitude signal to the amplitude drive control module and the phase signal to the phase signal processing module.

[0007] The amplitude drive control module is configured to receive the amplitude signal, perform pulse width modulation and voltage amplification processing on the amplitude signal to obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module.

[0008] The phase signal processing module is configured to receive the phase signal, perform phase offset and digital-to-analog conversion processing on the phase signal to obtain a radio frequency signal, and send the radio frequency signal to the power amplification module.

[0009] The power amplification module is configured to receive the pulse width modulation signal and the radio frequency signal, perform drain amplification processing on a target transmission signal according to the pulse width modulation signal, and perform switch mode amplification processing on the target transmission signal according to the radio frequency signal, and then transmit the target transmission signal.

[0010] In some embodiments, the baseband signal processing module comprises a pulse generation unit and a coordinate conversion unit connected in sequence, wherein:

[0011] The pulse generation unit is configured to obtain the baseband signal, perform decomposition processing on the baseband signal according to formula (1) to obtain an in-phase path signal and a quadrature path signal, and send the in-phase path signal and the quadrature path signal to the coordinate conversion unit.

[0012] (1);

[0013] In the formula (1), I(t) is the baseband signal, ωc is a carrier frequency, and t is time.

[0014] The coordinate conversion unit is configured to receive the in-phase path signal and the quadrature path signal, perform processing on the in-phase path signal and the quadrature path signal according to formula (2) to obtain an amplitude signal.

[0015] (2);

[0016] In the formula (2), A(t) is the amplitude signal, I(t) is the in-phase path signal, and Q(t) is the quadrature path signal.

[0017] The coordinate conversion unit is further configured to perform pre-distortion processing on the amplitude signal and send the pre-distortion processed amplitude signal to the amplitude drive control module.

[0018] ​​​​​​​​The coordinate conversion unit is further configured to process the in-phase path signal and the quadrature path signal according to formula (3) to obtain a phase signal, and send the phase signal to the phase signal processing module.

[0019] (3);

[0020] In the formula (3), I is the in-phase path signal, Q is the quadrature path signal, and φ is the phase signal. I is the in-phase path signal, Q is the quadrature path signal. I is the in-phase path signal,

[0021] In some embodiments, the amplitude drive control module comprises an envelope modulation unit and a drive amplification unit connected in sequence, wherein:

[0022] The envelope modulation unit is configured to receive the amplitude signal sent by the coordinate conversion unit, compare the amplitude signal with a preset high-frequency carrier signal, output a high level when the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, and output a low level otherwise.

[0023] The envelope modulation unit is further configured to integrate the high level and the low level to obtain an initial pulse width modulation signal, and send the initial pulse width modulation signal to the drive amplification unit.

[0024] The drive amplification unit is configured to receive the initial pulse width modulation signal, perform voltage amplification processing on the initial pulse width modulation signal to obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module.

[0025] In some embodiments, the phase signal processing module comprises a digital synthesis unit and a digital-to-analog conversion unit connected in sequence, wherein:

[0026] The digital synthesis unit is configured to receive the phase signal sent by the coordinate conversion unit, perform offset processing on the phase signal according to a preset phase offset value to obtain an offset phase signal, and send the offset phase signal to the digital-to-analog conversion unit.

[0027] The digital-to-analog conversion unit is configured to receive the offset phase signal, perform digital-to-analog conversion processing on the offset phase signal to obtain the radio frequency signal, and send the radio frequency signal to the power amplification module.

[0028] In some embodiments, the coordinate conversion unit comprises a pre-distortion processing element, wherein:

[0029] The pre-distortion processing element is configured to perform pre-distortion processing on the amplitude signal according to formula (4) and send the pre-distortion-processed amplitude signal to the amplitude drive control module.

[0030] (4);

[0031] In the formula (4), a is a pre-distortion-processed amplitude signal, b is a pre-distortion-processed amplitude signal, and c is a coefficient of a polynomial. In the formula (4), a is a pre-distortion-processed amplitude signal, b is a pre-distortion-processed amplitude signal, and c is a coefficient of a polynomial. In the formula (4), a is a pre-distortion-processed amplitude signal, b is a pre-distortion-processed amplitude signal, and c is a coefficient of a polynomial. In the formula (4), a is a pre-distortion-processed amplitude signal, b is a pre-distortion-processed amplitude signal, and c is a coefficient of a polynomial.

[0032] The polar coordinate-based range finder transmitting method provided by the embodiment of the application is applied to a polar coordinate-based range finder transmitting device, the device includes a baseband signal processing module, an amplitude drive control module, a phase signal processing module, and a power amplification module, and the method includes the following steps.

[0033] The baseband signal processing module is used to acquire a baseband signal, decompose and convert the baseband signal, generate an amplitude signal and a phase signal, send the amplitude signal to the amplitude drive control module, and send the phase signal to the phase signal processing module.

[0034] The amplitude drive control module is used to receive the amplitude signal, perform pulse width modulation and voltage amplification processing on the amplitude signal, obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module.

[0035] The phase signal processing module is used to receive the phase signal, perform phase offset and digital-to-analog conversion processing on the phase signal, obtain a radio frequency signal, and send the radio frequency signal to the power amplification module.

[0036] The power amplification module is used to receive the pulse width modulation signal and the radio frequency signal, perform drain amplification processing on a target transmitting signal according to the pulse width modulation signal, perform switch mode amplification processing on the target transmitting signal according to the radio frequency signal, and transmit the target transmitting signal.

[0037] In some embodiments, the baseband signal processing module includes a pulse generation unit and a coordinate conversion unit, and the baseband signal processing module is used to acquire a baseband signal, decompose and in-phase quadrature convert the baseband signal, generate an amplitude signal and a phase signal, send the amplitude signal to the amplitude drive control module, and send the phase signal to the phase signal processing module.

[0038] The baseband signal is obtained by the pulse generation unit, the baseband signal is processed by decomposition according to formula (5), the in-phase path signal and the quadrature path signal are obtained, and the in-phase path signal and the quadrature path signal are sent to the coordinate conversion unit.

[0039] (5);

[0040] In the formula (5), the baseband signal is , the in-phase path signal is , the quadrature path signal is , the carrier frequency is , and the time is .

[0041] The in-phase path signal and the quadrature path signal are received by the coordinate conversion unit, the in-phase path signal and the quadrature path signal are processed according to formula (6), and the amplitude signal is obtained.

[0042] (6);

[0043] In the formula (6), the amplitude signal is , the in-phase path signal is , and the quadrature path signal is .

[0044] The amplitude signal is pre-distortion processed by the coordinate conversion unit, and the pre-distortion processed amplitude signal is sent to the amplitude drive control module.

[0045] The in-phase path signal and the quadrature path signal are processed according to formula (7) by the coordinate conversion unit, the phase signal is obtained, and the phase signal is sent to the phase signal processing module.

[0046] (7);

[0047] In the formula (7), the phase signal is , the in-phase path signal is , and the quadrature path signal is .

[0048] In some embodiments, the amplitude drive control module includes an envelope modulation unit and a drive amplification unit, the amplitude signal is received by the amplitude drive control module, the amplitude signal is processed by pulse width modulation and voltage amplification, the pulse width modulation signal is obtained, the pulse width modulation signal is sent to the power amplification module, and the amplitude drive control module includes:

[0049] The envelope modulation unit receives the amplitude signal sent by the coordinate conversion unit, compares the amplitude signal with a preset high-frequency carrier signal, and outputs a high level when the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal; otherwise, a low level is output.

[0050] The envelope modulation unit integrates the high level and the low level to obtain an initial pulse width modulation signal, and sends the initial pulse width modulation signal to the drive amplification unit.

[0051] The drive amplification unit receives the initial pulse width modulation signal, performs voltage amplification processing on the initial pulse width modulation signal to obtain a pulse width modulation signal, and sends the pulse width modulation signal to the power amplification module.

[0052] In some embodiments, the phase signal processing module includes a digital synthesis unit and a digital-to-analog conversion unit. The phase signal processing module receives the phase signal, performs phase offset and digital-to-analog conversion processing on the phase signal to obtain a radio frequency signal, and sends the radio frequency signal to the power amplification module, including:

[0053] The digital synthesis unit receives the phase signal sent by the coordinate conversion unit, offsets the phase signal according to a preset phase offset value to obtain an offset phase signal, and sends the offset phase signal to the digital-to-analog conversion unit.

[0054] The digital-to-analog conversion unit receives the offset phase signal, performs digital-to-analog conversion processing on the offset phase signal to obtain the radio frequency signal, and sends the radio frequency signal to the power amplification module.

[0055] In some embodiments, the coordinate conversion unit includes a pre-distortion processing element. The coordinate conversion unit performs pre-distortion processing on the amplitude signal and sends the pre-distortion processed amplitude signal to the amplitude drive control module, including:

[0056] The pre-distortion processing element performs pre-distortion processing on the amplitude signal according to formula (8) and sends the pre-distortion processed amplitude signal to the amplitude drive control module.

[0057] (8);

[0058] In the formula (8), is the pre-distortion processed amplitude signal, is the amplitude signal before pre-distortion processing, is the coefficient of the polynomial.

[0059] The polar coordinate-based range finder transmitting device and method provided by the embodiments of the present application include a baseband signal processing module, an amplitude drive control module, a phase signal processing module and a power amplification module. The baseband signal processing module obtains a baseband signal, which is decomposed and converted into an in-phase quadrature signal to generate amplitude and phase signals, which are transmitted to the amplitude drive control module and the phase signal processing module, respectively. The amplitude drive control module performs pulse width modulation and voltage amplification on the amplitude signal to obtain a pulse width modulation signal. The phase signal processing module performs phase offset and digital-to-analog conversion on the phase signal to obtain a radio frequency signal. The power amplification module receives the two signals, performs drain amplification and switch mode amplification on the target transmitting signal, and then transmits the signal. Through dual-mode amplification, the heat of the device is reduced, the efficiency of the device is improved, and the reliability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0060] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0061] Figure 1 The structure schematic diagram of the polar coordinate-based range finder transmitting device provided by the embodiments of the present application is shown in the figure.

[0062] Figure 2 The structure schematic diagram of the baseband signal processing module in the polar coordinate-based range finder transmitting device provided by the embodiments of the present application is shown in the figure.

[0063] Figure 3 The structure schematic diagram of the amplitude drive control module in the polar coordinate-based range finder transmitting device provided by the embodiments of the present application is shown in the figure.

[0064] Figure 4 The structure schematic diagram of the phase signal processing module in the polar coordinate-based range finder transmitting device provided by the embodiments of the present application is shown in the figure.

[0065] Figure 5 The implementation flowchart of the polar coordinate-based range finder transmitting method provided by the embodiments of the present application is shown in the figure.

[0066] Figure 6 The implementation flowchart of another polar coordinate-based range finder transmitting method provided by the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0067] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will further describe the specific technical solutions of the present application with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application, but are not used to limit the scope of the present application.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification is for describing the embodiments of the present application only and is not intended to limit the present application.

[0069] In the following description, reference is made to the "some embodiments", which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0070] It should be noted that the terms "first, second, third" used in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific order of the objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0071] Figure 1 A structure schematic diagram of a polar coordinate-based range finder transmitting device is provided in the embodiments of the present application. As shown in the figure, Figure 1 The device includes a baseband signal processing module 101, an amplitude drive control module 102, a phase signal processing module 103, and a power amplification module 104. The baseband signal processing module 101 is connected with the amplitude drive control module 102 and the phase signal processing module 103 respectively. The amplitude drive control module 102 and the phase signal processing module 103 are also connected with the power amplification module 104 respectively.

[0072] In the embodiments of the present application, the polar coordinate-based range finder transmitting device is composed of the baseband signal processing module 101, the amplitude drive control module 102, the phase signal processing module 103, and the power amplification module 104. The modules are electrically connected together. Each module can be integrated on one printed circuit board, or multiple independent circuit boards can be connected through an interface.

[0073] The baseband signal processing module 101 is used to obtain a baseband signal, decompose and convert the baseband signal, generate an amplitude signal and a phase signal, send the amplitude signal to the amplitude drive control module 102, and send the phase signal to the phase signal processing module 103.

[0074] In the embodiment of the present application, the baseband signal processing module 101 can select a digital signal processor chip or a field programmable gate array. The baseband signal processing module 101 obtains a baseband signal from an external signal source. The baseband signal is decomposed and converted by running a pre-written signal processing algorithm program internally. For example, the baseband signal can be converted from the time domain to the frequency domain by performing Fourier transform on the baseband signal. The frequency spectrum components of the signal can be efficiently calculated by the fast Fourier transform algorithm.

[0075] In the frequency domain, the signal is decomposed into in-phase components and quadrature components. For example, the baseband signal is multiplied by a carrier signal of a specific frequency, and the high-frequency components are filtered out to obtain the in-phase component and the quadrature component.

[0076] According to the in-phase component and the quadrature component obtained by decomposition, the amplitude signal is obtained by square root operation.

[0077] In actual calculation, since the arctan function calculation is relatively complex, the present application designs a method for approximating the phase signal by looking up a table. The lookup table pre-stores phase values corresponding to different ratios of in-phase component and quadrature component. By inputting the ratio of in-phase component and quadrature component, the corresponding phase signal is quickly obtained from the lookup table.

[0078] The generated amplitude signal and phase signal are sent to the amplitude drive control module 102 and the phase signal processing module 103, respectively, through a data bus or a dedicated signal line. In order to ensure the stability and accuracy of signal transmission, differential signal transmission technology can be used.

[0079] The amplitude drive control module 102 is configured to receive the amplitude signal, perform pulse width modulation and voltage amplification processing on the amplitude signal, obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module 104.

[0080] In the embodiment of the present application, the amplitude drive control module 102 mainly consists of a pulse width modulation controller and a voltage amplification circuit. The pulse width modulation controller can select a dedicated integrated circuit chip. The voltage amplification circuit can use a power operational amplifier or a transistor amplification circuit.

[0081] After the amplitude drive control module 102 receives the amplitude signal, the pulse width modulation controller compares the amplitude signal with the internal high-frequency carrier signal to generate a pulse width modulation signal. The pulse width of the signal is proportional to the size of the amplitude signal. Then, the voltage amplification circuit performs voltage amplification on the pulse width modulation signal to make it reach the required input level of the power amplification module 104.

[0082] The processed pulse width modulation signal is sent to the power amplification module 104 through a signal line, ensuring that the signal transmission process is not disturbed.

[0083] The phase signal processing module 103 is configured to receive a phase signal, perform phase offset and digital-to-analog conversion on the phase signal, obtain a radio frequency signal, and send the radio frequency signal to the power amplification module 104.

[0084] In the embodiments of the present application, the phase signal processing module 103 includes a phase offset circuit and a digital-to-analog conversion chip. The phase offset circuit can be implemented by using a digital logic circuit or an analog circuit, and the digital-to-analog conversion chip can be selected from high-precision chips.

[0085] After the phase signal processing module 103 receives the phase signal, the phase offset circuit performs offset processing on the phase signal according to a preset phase offset value. Then, the digital-to-analog conversion chip converts the offset digital phase signal into an analog radio frequency signal. The generated radio frequency signal is sent to the power amplification module 104 through a radio frequency transmission line.

[0086] The power amplification module 104 is configured to receive a pulse width modulation signal and a radio frequency signal, perform drain amplification processing on a target transmission signal according to the pulse width modulation signal, and perform switch mode amplification processing on the target transmission signal according to the radio frequency signal, and then transmit the target transmission signal.

[0087] In the embodiments of the present application, the power amplification module 104 can use a radio frequency power transistor or a power amplifier chip, and the power amplification module 104 uses a high-efficiency gallium nitride device power amplifier, such as a class-D power amplifier or a class-E power amplifier.

[0088] After the power amplification module 104 receives the pulse width modulation signal and the radio frequency signal, the target transmission signal is subjected to drain amplification processing and switch mode amplification processing, respectively. The drain amplification processing is used to adjust the amplitude of the signal, and the switch mode amplification processing is used to improve the power efficiency of the signal. The pulse width modulation signal controls the drain voltage of the power amplification module 104, so that the transistor works in a linear amplification region. When the amplitude of the pulse width modulation signal changes, the drain current of the transistor also changes accordingly, thereby amplifying the amplitude of the target transmission signal. The radio frequency signal controls the switch state of the power amplification module 104, so that the power amplification module 104 quickly switches between the on state and the off state. In the on state, the power amplification module 104 transmits power energy to the load; in the off state, the power amplification module 104 hardly consumes energy, thereby realizing high-efficiency power amplification. The amplified target transmission signal is transmitted.

[0089] The application embodiment adopts polar coordinates and double-mode amplification, greatly improves efficiency, optimizes linearity, and solves the problem of low power backoff efficiency. Modular design reduces heat, without the need for forced ventilation. Reducing temperature delays aging, simplifies architecture, reduces failure, prolongs equipment life, and reduces maintenance costs.

[0090] In the above Figure 1 , the application embodiment also provides a structure diagram of a baseband signal processing module in a polar coordinate-based range finder transmitting device, as shown in Figure 2 , the baseband signal processing module 101 includes a pulse generation unit 1011 and a coordinate conversion unit 1012 connected in sequence, wherein:

[0091] The pulse generation unit 1011 is configured to obtain a baseband signal, decompose and process the baseband signal according to formula (1), obtain an in-phase channel signal and a quadrature channel signal, and send the in-phase channel signal and the quadrature channel signal to the coordinate conversion unit 1012.

[0092] In the application embodiment, the pulse generation unit 1011 is constructed by using a programmable gate array, and a signal processing circuit is designed by using a hardware description language. The programmable gate array can include a digital controlled oscillator.

[0093] The digital controlled oscillator generates a carrier signal and , multiplies the input baseband signal with and respectively, and finally outputs the in-phase channel signal and the quadrature channel signal through addition synthesis.

[0094] The specific calculation formula is as follows, (1).

[0095] In formula (1), is the baseband signal, is the in-phase channel signal, is the quadrature channel signal, is the carrier frequency, is time.

[0096] The coordinate conversion unit 1012 is configured to receive the in-phase channel signal and the quadrature channel signal, process the in-phase channel signal and the quadrature channel signal according to formula (2), and obtain an amplitude signal. The amplitude signal is pre-distorted, and the pre-distorted amplitude signal is sent to an amplitude drive control module 102. The output data of the coordinate converter unit can adopt a fiber interface.

[0097] Specifically, according to formula (2), the input in-phase channel signal and quadrature channel signal are first squared, then summed, and finally the square root is taken to obtain the amplitude signal The amplitude signal is processed, such as filtered by a moving average filtering algorithm, to eliminate abnormal values.

[0098] (2).

[0099] In formula (2), the amplitude signal is the in-phase path signal is the quadrature path signal is

[0100] The coordinate conversion unit 1012 is also configured to process the in-phase path signal and the quadrature path signal according to formula (3) to obtain a phase signal, and send the phase signal to the phase signal processing module 103.

[0101] (3).

[0102] In formula (3), the phase signal is the in-phase path signal is the quadrature path signal is

[0103] The embodiments of the present application ensure the accuracy of the generation of the in-phase path signal, the quadrature path signal, the amplitude signal, and the phase signal by standardizing the decomposition of the baseband signal and the amplitude and phase calculation, and by using mathematical quantization logic. In combination with the pre-distortion processing of the amplitude signal by the coordinate conversion unit 1012, the signal interference is reduced, and the ranging signal accuracy is ensured. The baseband signal processing module 101 is split into the pulse generation unit 1011 and the coordinate conversion unit 1012, the division of labor boundary is clear, the development complexity is reduced, the output signal can accurately adapt to the input requirements of the subsequent amplitude drive control module 102 and the phase signal processing module 103, and the overall signal processing fluency of the device is improved.

[0104] In the case shown in the above Figure 2 The embodiments of the present application also provide a structure diagram of an amplitude drive control module in a polar coordinate-based range finder transmitting device, as shown in Figure 3 The amplitude drive control module 102 includes an envelope modulation unit 1021 and a drive amplification unit 1022 connected in sequence, wherein:

[0105] The envelope modulation unit 1021 is configured to receive the amplitude signal sent by the coordinate conversion unit 1012, compare the amplitude signal with a preset high-frequency carrier signal, output a high level when the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, and output a low level otherwise. The high level and the low level are integrated to obtain an initial pulse width modulation signal, and the initial pulse width modulation signal is sent to the drive amplification unit 1022. ​​​

[0106] In the embodiment of the present application, the envelope modulation unit 1021 can include a comparator. The amplitude signal output by the coordinate conversion unit 1012 is input to the positive input terminal of the comparator, and the preset high-frequency carrier signal is input to the negative input terminal of the comparator. When the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, the comparator outputs a high level; otherwise, a low level. The high and low levels output by the comparator are time-integrated to generate an initial pulse width modulation signal.

[0107] The drive amplification unit 1022 is configured to receive the initial pulse width modulation signal, perform voltage amplification processing on the initial pulse width modulation signal, obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module 104.

[0108] In the embodiment of the present application, the drive amplification unit 1022 can include an operational amplifier, thereby building a voltage amplification circuit. The initial pulse width modulation signal output by the envelope modulation unit 1021 is input to the input terminal of the operational amplifier, and the amplification multiple is set through a peripheral resistance network, so as to perform voltage amplification on the signal and output a pulse width modulation signal meeting the input requirements of the power amplification module 104.

[0109] The amplitude comparison mechanism of the envelope modulation unit 1021 in the embodiment of the present application converts the continuous amplitude signal into discrete high and low levels, thereby avoiding analog modulation distortion. The drive amplification unit 1022 performs voltage amplification on the pulse width modulation signal, thereby ensuring that the power tube gate drive requirements are met and the signal anti-interference capability is improved.

[0110] In the above Figure 3 The embodiment of the present application also provides a structure diagram of a phase signal processing module in a polar coordinate-based range finder transmitting device, as shown in Figure 4 The phase signal processing module 103 includes a digital synthesis unit 1031 and a digital-to-analog conversion unit 1032 connected in sequence, wherein:

[0111] The digital synthesis unit 1031 is configured to receive the phase signal sent by the coordinate conversion unit 1012, perform offset processing on the phase signal according to a preset phase offset value, obtain an offset phase signal, and send the offset phase signal to the digital-to-analog conversion unit 1032.

[0112] In the embodiment of the present application, the digital synthesis unit 1031 can include a signal receiving interface, a processor and a signal output interface. The signal receiving interface is configured to receive the phase signal transmitted by the coordinate conversion unit 1012; the processor is configured to process the phase offset; and the signal output interface is configured to send the offset phase signal to the digital-to-analog conversion unit 1032.

[0113] The digital synthesis unit 1031 receives the phase signal sent by the coordinate conversion unit 1012 through a signal receiving interface. The signal is usually transmitted in digital form to ensure accuracy and anti-interference ability during transmission.

[0114] The processor adjusts the received phase signal according to a preset phase offset value. For example, in a communication system, a corresponding phase offset value needs to be set to compensate for the phase delay during signal transmission. The processor adds the preset phase offset value to the received phase signal through a simple addition operation, thereby obtaining the offset phase signal. For example, if the preset phase offset value is 30°, the input phase signal needs to be increased by 30°.

[0115] The processor sends the offset phase signal to the digital-to-analog conversion unit 1032 through a signal output interface after processing.

[0116] The digital-to-analog conversion unit 1032 is used to receive the offset phase signal and perform digital-to-analog conversion processing on the offset phase signal to obtain a radio frequency signal, and send the radio frequency signal to the power amplification module 104.

[0117] In the embodiment of the application, the digital-to-analog conversion unit 1032 can select a high-performance digital-to-analog converter chip.

[0118] The digital synthesis unit 1031 and the digital-to-analog conversion unit 1032 are connected to ensure the stability of signal transmission. In addition, the output end of the digital-to-analog conversion unit 1032 is connected to the input port of the power amplification module 104, and the digital signal is mapped to the corresponding analog voltage value according to the reference voltage and the digital code, thereby generating a continuous radio frequency signal. The generated radio frequency signal is sent to the power amplification module 104.

[0119] The embodiment of the application improves the accuracy by performing phase offset of the signal, and meets the demand of high-precision ranging. By mapping the digital signal to the corresponding analog voltage value, the signal purity is ensured, and the accuracy of the ranging signal is guaranteed.

[0120] The coordinate conversion unit 1012 includes a pre-distortion processing element, wherein: the pre-distortion processing element is used to perform pre-distortion processing on the amplitude signal according to formula (4), and send the pre-distortion processed amplitude signal to the amplitude drive control module 102.

[0121] (4);

[0122] In formula (4), is the pre-distortion processed amplitude signal, is the amplitude signal before pre-distortion processing, is the coefficient of the polynomial.

[0123] In the embodiment of the present application, the coordinate conversion unit 1012 generates the amplitude signal, and inputs the amplitude signal to a pre-distortion processing element. The pre-distortion processing element is internally provided with a pre-distortion processing function, and performs operation on the input amplitude signal based on preset polynomial coefficients, to complete pre-distortion compensation.

[0124] (4).

[0125] In the formula (4), a is a pre-distortion processed amplitude signal, b is a pre-distortion processed amplitude signal, and c is a polynomial coefficient. In the formula (4), a is a pre-distortion processed amplitude signal, b is a pre-distortion processed amplitude signal, and c is a polynomial coefficient. In the formula (4), a is a pre-distortion processed amplitude signal, b is a pre-distortion processed amplitude signal, and c is a polynomial coefficient. In the formula (4), a is a pre-distortion processed amplitude signal, b is a pre-distortion processed amplitude signal, and c is a polynomial coefficient. The pre-distortion processed amplitude signal is sent to the amplitude drive control module 102 through an output interface.

[0126] In the embodiment of the present application, the amplitude signal is subjected to polynomial pre-distortion calculation by the pre-distortion processing element, to offset the nonlinear characteristics of the power amplification module 104.

[0127] The present application also provides a polar coordinate-based range finder transmitting method, which is applied to the polar coordinate-based range finder transmitting device in the above embodiment, as shown in Figure 5 The present application also provides a polar coordinate-based range finder transmitting method, which is applied to the polar coordinate-based range finder transmitting device in the above embodiment, as shown in Figure 5 The present application also provides a polar coordinate-based range finder transmitting method, which is applied to the polar coordinate-based range finder transmitting device in the above embodiment, as shown in

[0128] In step 501, the baseband signal processing module 101 acquires a baseband signal, and performs decomposition and conversion processing on the baseband signal, to generate an amplitude signal and a phase signal. The amplitude signal is sent to the amplitude drive control module 102, and the phase signal is sent to the phase signal processing module 103.

[0129] In the embodiment of the present application, the original baseband signal is acquired from a signal source (such as a memory, other signal processing device, etc.). The baseband signal can contain key information for ranging, and its frequency, amplitude and other characteristics are related to subsequent processing and ranging functions.

[0130] The acquired baseband signal is subjected to decomposition operation. This step can adopt common methods in the field of signal processing, such as using Fourier transform to decompose the baseband signal into signal components of different frequency components, to prepare for subsequent in-phase quadrature conversion.

[0131] The decomposed signal is in-phase quadrature converted to generate an amplitude signal and a phase signal. By decomposing the signal into in-phase and quadrature components, the amplitude and phase of the signal can be more conveniently analyzed and processed. For example, using a specific conversion algorithm, the amplitude signal and the phase signal are calculated according to the characteristics of the decomposed signal.

[0132] The generated amplitude signal is sent to the amplitude drive control module 102, and the phase signal is sent to the phase signal processing module 103.

[0133] Step 502, the amplitude signal is received by the amplitude drive control module 102, and the amplitude signal is pulse width modulated and voltage amplified to obtain a pulse width modulated signal, which is sent to the power amplification module 104.

[0134] In the embodiment of the present application, after the amplitude drive control module 102 receives the amplitude signal, it is pulse width modulated. The width of the pulse signal is adjusted according to the size of the amplitude signal, so that the width of the pulse signal has a certain corresponding relationship with the amplitude signal. For example, when the amplitude signal is large, the pulse width is widened accordingly; when the amplitude signal is small, the pulse width is narrowed.

[0135] The signal after pulse width modulation is voltage amplified. The voltage of the signal is raised by the amplifier to meet the input requirements of the subsequent power amplification module 104. The pulse width modulated signal after voltage amplification is sent to the power amplification module 104.

[0136] Step 503, the phase signal is received by the phase signal processing module 103, and the phase signal is phase shifted and digitally-analog converted to obtain a radio frequency signal, which is sent to the power amplification module 104.

[0137] In the embodiment of the present application, after the phase signal processing module 103 receives the phase signal, it is phase shifted. First, a preset phase offset is added to the phase signal to change the phase characteristics of the signal.

[0138] The digital phase signal after phase shift processing is converted into an analog radio frequency signal. The digital signal is converted into a continuous analog signal by the digital-to-analog converter, so that it can be transmitted and processed in the radio frequency field. The converted radio frequency signal is sent to the power amplification module 104.

[0139] Step 504, the pulse width modulated signal and the radio frequency signal are received by the power amplification module 104, and the target transmission signal is amplified by the drain according to the pulse width modulated signal, and the target transmission signal is amplified by the switch mode according to the radio frequency signal. After processing, the target transmission signal is transmitted.

[0140] In the embodiment of the present application, after the power amplification module 104 receives the pulse width modulation signal, the drain of the target transmission signal is amplified according to the signal. The pulse width modulation signal controls the drain voltage of the power amplifier, so that the power amplifier works in the linear amplification region, thereby amplifying the amplitude of the target transmission signal and improving the strength of the signal.

[0141] At the same time, the power amplification module 104 amplifies the target transmission signal in a switch mode according to the received radio frequency signal. The radio frequency signal controls the switching state of the power amplifier, so that the power amplifier quickly switches between the on and off states, realizes efficient power amplification, and further improves the power of the signal.

[0142] The target transmission signal processed by the drain amplification and switch mode amplification is transmitted. The electrical signal is converted into an electromagnetic wave signal and propagated in space to realize the ranging function.

[0143] The embodiment of the present application separates the baseband signal into independent amplitude and phase signals through decomposition and conversion technology, avoids aliasing interference, supports parallel processing, and improves system efficiency. Drain amplification ensures accurate control of signal amplitude, and switch mode amplification improves efficiency. The two work together to realize high-power transmission.

[0144] In the above Figure 5 , the embodiment of the present application also provides an implementation process diagram of a polar coordinate-based range finder transmitter, as shown in Figure 6 , which can include the following steps 601 to 604:

[0145] Step 601, obtain the baseband signal through the pulse generation unit 1011, and decompose the baseband signal according to formula (1) to obtain the in-phase path signal and the quadrature path signal. The in-phase path signal and the quadrature path signal are sent to the coordinate conversion unit 1012.

[0146] In the embodiment of the present application, the pulse generation unit 1011 obtains the baseband signal from the signal source. The signal source can be various sensors or other signal generating devices, such as in the radar ranging scene, it can be the echo signal received by the antenna after preliminary processing.

[0147] According to formula (6) (6), the baseband signal is decomposed.

[0148] In formula (6), is the amplitude signal, is the in-phase path signal, The in-phase path signal and the quadrature path signal are transmitted to the coordinate conversion unit 1012. The transmission can be realized through an internal data bus or other communication interfaces to ensure accurate transmission of the signals.

[0149] At step 602, the in-phase path signal and the quadrature path signal are received by the coordinate conversion unit 1012, and the in-phase path signal and the quadrature path signal are processed according to formula (2) to obtain an amplitude signal.

[0150] In the embodiment of the present application, the amplitude signal is obtained by formula (6) (6).

[0151] In formula (6), is the amplitude signal, is the in-phase path signal, is the quadrature path signal.

[0152] At step 603, the amplitude signal is pre-distorted by the coordinate conversion unit 1012, and the pre-distorted amplitude signal is transmitted to the amplitude drive control module 102.

[0153] The coordinate conversion unit 1012 optimizes the amplitude signal through mathematical algorithms, eliminates outliers, such as filtering, etc., to ensure the accuracy of the amplitude signal.

[0154] At step 604, the in-phase path signal and the quadrature path signal are processed by the coordinate conversion unit 1012 according to formula (7) to obtain a phase signal, and the phase signal is transmitted to the phase signal processing module 103.

[0155] In the embodiment of the present application, the in-phase path signal and the quadrature path signal are processed by formula (7) to obtain a phase signal: (7).

[0156] In formula (7), is the phase signal, is the in-phase path signal, is the quadrature path signal.

[0157] In the embodiment of the present application, the method of lookup table can also be used to approximate calculation to improve the calculation speed. The lookup table pre-stores the phase values corresponding to different ratios of the quadrature path signal to the in-phase path signal, and the corresponding phase signal is quickly obtained from the lookup table by inputting the ratio of the quadrature path signal to the in-phase path signal. After obtaining the phase signal, it is transmitted to the phase signal processing module 103.

[0158] The embodiment of the present application can more accurately reflect the characteristics of the baseband signal by accurately calculating the amplitude signal and the phase signal, provide more accurate input for subsequent signal modulation and amplification, and thus improve the accuracy of distance measurement. The pre-distortion processing of the amplitude signal can effectively compensate for the nonlinear distortion in the power amplification process, and improve the linearity and signal quality of the system.

[0159] The amplitude driving control module 102 includes an envelope modulation unit 1021 and a driving amplification unit 1022. The amplitude driving control module 102 receives the amplitude signal, performs pulse width modulation and voltage amplification processing on the amplitude signal, obtains a pulse width modulation signal, and sends the pulse width modulation signal to the power amplification module 104. The amplitude driving control module 102 includes: the envelope modulation unit 1021 receives the amplitude signal sent by the coordinate conversion unit 1012, compares the amplitude signal with a preset high-frequency carrier signal, and outputs a high level when the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal; otherwise, a low level is output.

[0160] In the embodiment of the present application, the envelope modulation unit 1021 receives the amplitude signal sent by the coordinate conversion unit 1012. In an actual range finder transmitter, the coordinate conversion unit 1012 transmits the calculated amplitude signal to the envelope modulation unit 1021 through an internal data transmission line.

[0161] The received amplitude signal is compared with a preset high-frequency carrier signal. The envelope modulation unit 1021 compares the amplitude values of the amplitude signal and the high-frequency carrier signal in real time. When the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, the comparator outputs a high level; otherwise, a low level is output.

[0162] The envelope modulation unit 1021 integrates the high level and the low level to obtain an initial pulse width modulation signal, and sends the initial pulse width modulation signal to the driving amplification unit 1022.

[0163] In the embodiment of the present application, the envelope modulation unit 1021 integrates the high level and the low level output by the comparator to obtain an initial pulse width modulation signal. The integration is realized by a digital logic circuit, for example, a circuit composed of flip-flops and counters counts and sorts the high level and the low level, and converts them into an initial pulse width modulation signal with a certain pulse width and period. Then, the initial pulse width modulation signal is sent to the driving amplification unit 1022 through an internal signal transmission line.

[0164] The driving amplification unit 1022 receives the initial pulse width modulation signal, performs voltage amplification processing on the initial pulse width modulation signal, obtains a pulse width modulation signal, and sends the pulse width modulation signal to the power amplification module 104.

[0165] The driving amplification unit 1022 receives the initial pulse width modulation signal from the envelope modulation unit 1021 through the internal data transmission line, and the driving amplification unit 1022 performs voltage amplification processing on the initial pulse width modulation signal. This can be implemented using an operational amplifier. According to the specific system requirements, the gain parameter of the operational amplifier is set to amplify the voltage of the initial pulse width modulation signal to a suitable level to meet the input requirements of the subsequent power amplification module 104. For example, the initial 0-5V pulse width modulation signal is amplified to a 0-12V pulse width modulation signal.

[0166] The driving amplification unit 1022 sends the pulse width modulation signal after voltage amplification processing to the power amplification module 104 through the internal data transmission line. The power amplification module 104 performs drain amplification processing on the target transmission signal according to the received pulse width modulation signal.

[0167] The embodiments of the present application perform voltage amplification processing to make the pulse width modulation signal have sufficient voltage amplitude, which can better drive the power amplification module 104 and improve the working efficiency and stability of the power amplification module 104.

[0168] The phase signal processing module 103 includes a digital synthesis unit 1031 and a digital-to-analog conversion unit 1032. The phase signal processing module 103 receives a phase signal, performs phase offset and digital-to-analog conversion processing on the phase signal, obtains a radio frequency signal, and sends the radio frequency signal to the power amplification module 104, including: receiving the phase signal sent by the coordinate conversion unit 1012 through the digital synthesis unit 1031, performing offset processing on the phase signal according to a preset phase offset value to obtain an offset phase signal, and sending the offset phase signal to the digital-to-analog conversion unit 1032.

[0169] In the embodiments of the present application, the digital synthesis unit 1031 receives the phase signal sent by the coordinate conversion unit 1012 through the internal data transmission channel. The digital synthesis unit 1031 performs offset processing on the received phase signal according to a preset phase offset value. The preset phase offset value can be dynamically adjusted by the system according to specific ranging requirements, environmental factors, etc. For example, in the aviation ranging scene, in order to compensate for the phase delay in the signal propagation process, the phase offset value needs to be adjusted in real time according to the flight speed, distance, etc. of the aircraft.

[0170] By precisely controlling the phase offset, the digital synthesis unit 1031 offsets the input phase signal according to the preset phase offset value to obtain an offset phase signal. The digital synthesis unit 1031 sends the offset phase signal to the digital-to-analog conversion unit 1032 through the internal data transmission channel, preparing for subsequent digital-to-analog conversion.

[0171] The offset phase signal is received by the digital-to-analog conversion unit 1032, and the digital-to-analog conversion unit 1032 performs digital-to-analog conversion processing on the offset phase signal to obtain a radio frequency signal, and sends the radio frequency signal to the power amplification module 104.

[0172] In the embodiment of the present application, the digital-to-analog conversion unit 1032 receives the offset phase signal from the digital synthesis unit 1031 through the internal data transmission channel, and the digital-to-analog conversion unit 1032 performs digital-to-analog conversion processing on the offset phase signal to convert the digital phase signal into an analog radio frequency signal. The digital signal is converted into a continuous analog voltage signal, which has a frequency and phase characteristic corresponding to the phase signal, thereby forming a radio frequency signal.

[0173] The digital-to-analog conversion unit 1032 sends the radio frequency signal after filtering processing to the power amplification module 104 through the radio frequency transmission line.

[0174] The embodiment of the present application can flexibly adjust the phase of the transmitted signal according to the actual demand by performing accurate phase offset processing on the phase signal by the digital synthesis unit 1031, thereby improving the accuracy and accuracy of the ranging.

[0175] The coordinate conversion unit 1012 includes a pre-distortion processing element, and the amplitude signal is pre-distortion processed by the coordinate conversion unit 1012, and the amplitude signal after pre-distortion processing is sent to the amplitude drive control module 102, including: The amplitude signal is pre-distortion processed by the pre-distortion processing element, and the amplitude signal after pre-distortion processing is sent to the amplitude drive control module 102.

[0176] The pre-distortion processing element in the coordinate conversion unit 1012 receives the amplitude signal calculated inside the coordinate conversion unit 1012 and pre-distortion processes the amplitude signal according to formula (8).

[0177] (8).

[0178] In formula (8), is the amplitude signal after pre-distortion processing, is the amplitude signal before pre-distortion processing, is the coefficient of the polynomial.

[0179] So that the signal after pre-distortion processing can be as close to linear amplification as possible after passing through the power amplifier. The pre-distortion processing element sends the amplitude signal after pre-distortion processing to the amplitude drive control module 102 through the internal data transmission line.

[0180] The embodiment of the present application compensates the non-linear distortion of the power amplifier through pre-distortion processing, so that the linearity of the whole transmitting system is improved significantly. The frequency spectrum purity of the transmitting signal is higher, the interference to the adjacent frequency band is reduced, and the anti-interference ability of the system is improved.

[0181] Although the present application provides the method operation steps as described in the embodiments or flowcharts, more or less operation steps can be included based on the conventional or non-creative labor. The step sequence listed in the embodiments is only one of the many step execution sequences, and does not represent the only execution sequence. In actual device or client product execution, the method sequence can be executed in sequence or in parallel (for example, parallel processor or multi-thread processing environment) as shown in the embodiments or the accompanying drawings.

[0182] Some of the modules in the device described in the present application can be described in the general context of computer-executable instructions, such as program modules, which are executed by computers. Generally, program modules include routines, programs, objects, components, data structures, classes, and the like, which perform particular tasks or implement particular abstract data types. The present application can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network. In a distributed computing environment, program modules can be located in both local and remote computer storage media including storage devices.

[0183] The device or module described in the above embodiments can be specifically implemented by a computer chip or entity, or by a product with certain functions. For the convenience of description, the above device is described as various modules with functions. In the implementation of the embodiments of the present application, the functions of each module can be implemented in the same or multiple software and / or hardware. Of course, the modules that implement certain functions can also be implemented by multiple sub-modules or sub-units.

[0184] The methods, apparatuses or modules described in the present application can be implemented in a computer readable program code in any appropriate manner. For example, the controller can take the form of, for example, a microprocessor or processor and a computer readable medium storing computer readable program code (for example, software or firmware) executable by the (micro)processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller and an embedded microcontroller. Examples of the controller include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320. The memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art will also know that, in addition to implementing the controller in pure computer readable program code, the same functions can be achieved by logically programming the method steps in the form of logic gates, switches, ASICs, programmable logic controllers and embedded microcontrollers. Therefore, such a controller can be considered as a hardware component, and the means included therein for implementing various functions can also be considered as structures within the hardware component. Alternatively, the means for implementing various functions can even be considered as both a software module implementing the method and a structure within the hardware component.

[0185] In addition, each functional module in each embodiment of the present application can be integrated in one processing module, or each module can exist independently, or two or more modules can be integrated in one module.

[0186] The storage medium described above includes, but is not limited to, a Random Access Memory (RAM), a Read-Only Memory (ROM), a Cache, a Hard Disk Drive (HDD) or a Memory Card. The memory can be used to store computer program instructions.

[0187] Those skilled in the art can clearly understand the application by the description of the foregoing embodiments. The technical solutions of the application can be implemented by means of software and necessary hardware. Based on such an understanding, the technical solutions of the application can be embodied in the form of a software product or in the form of data migration. The computer software product can be stored in a storage medium, such as a ROM / RAM, a magnetic disk, or an optical disk, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a mobile terminal, a server, or a network device) to execute the methods described in the various embodiments or some parts of the embodiments.

[0188] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment mainly describes the difference from other embodiments. The whole or part of the application can be used in many general or special computer system environments or configurations. For example, personal computers, server computers, handheld devices or portable devices, tablet devices, mobile communication terminals, multi-processor systems, microprocessor-based systems, programmable electronic devices, network PCs, small computers, large computers, distributed computing environments including any of the above systems or devices, and the like.

[0189] The foregoing embodiments are only used to illustrate the technical solutions of the application, and not to limit the application; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the application.

Claims

1. A polar coordinate based range finder launch device, characterized by, The device comprises a baseband signal processing module, an amplitude drive control module, a phase signal processing module and a power amplification module, the baseband signal processing module is connected with the amplitude drive control module and the phase signal processing module respectively, the amplitude drive control module and the phase signal processing module are further connected with the power amplification module respectively, wherein: The baseband signal processing module is used for acquiring a baseband signal, decomposing and converting the baseband signal, generating an amplitude signal and a phase signal, sending the amplitude signal to the amplitude drive control module and sending the phase signal to the phase signal processing module; The amplitude drive control module is used for receiving the amplitude signal, pulse width modulating and voltage amplifying the amplitude signal to obtain a pulse width modulated signal, and sending the pulse width modulated signal to the power amplification module; The phase signal processing module is used for receiving the phase signal, phase shifting and digital-analog converting the phase signal to obtain a radio frequency signal, and sending the radio frequency signal to the power amplification module; The power amplification module is used for receiving the pulse width modulated signal and the radio frequency signal, amplifying a target sending signal according to the pulse width modulated signal, and amplifying the target sending signal according to the radio frequency signal, and then emitting the target sending signal; The baseband signal processing module comprises a pulse generation unit and a coordinate conversion unit connected in sequence, wherein: The pulse generation unit is used for acquiring the baseband signal, decomposing the baseband signal according to formula (1) to obtain an in-phase path signal and a quadrature path signal, and sending the in-phase path signal and the quadrature path signal to the coordinate conversion unit; （1）； wherein, in the formula (1), is a baseband signal, is an in-phase path signal, is a quadrature path signal, is a carrier frequency, is time; The coordinate conversion unit is used for receiving the in-phase path signal and the quadrature path signal, processing the in-phase path signal and the quadrature path signal according to formula (2) to obtain an amplitude signal; （2）； wherein, in the formula (2), is an amplitude signal, is an in-phase path signal, is a quadrature path signal; The coordinate conversion unit is further used for pre-distorting the amplitude signal and sending the pre-distorted amplitude signal to the amplitude drive control module; The coordinate conversion unit is further used for processing the in-phase path signal and the quadrature path signal according to formula (3) to obtain a phase signal, and sending the phase signal to the phase signal processing module; （3）； wherein, in the formula (3), is a phase signal, is an in-phase path signal, is a quadrature path signal; The amplitude drive control module comprises an envelope modulation unit and a drive amplification unit connected in sequence, wherein: The envelope modulation unit is used for receiving the amplitude signal sent by the coordinate conversion unit, comparing the amplitude signal with a preset high-frequency carrier signal, outputting a high level when the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, and outputting a low level otherwise; The envelope modulation unit is further used for integrating the high level and the low level to obtain an initial pulse width modulated signal, and sending the initial pulse width modulated signal to the drive amplification unit; The driving amplification unit is configured to receive the initial pulse width modulation signal, perform voltage amplification processing on the initial pulse width modulation signal, obtain a pulse width modulation signal, and send the pulse width modulation signal to the power amplification module.

2. A polar coordinate based range finder launch device according to claim 1, wherein, The phase signal processing module comprises a digital synthesis unit and a digital-to-analog conversion unit connected in sequence, wherein: The digital synthesis unit is configured to receive the phase signal sent by the coordinate conversion unit, perform offset processing on the phase signal according to a preset phase offset value, obtain an offset phase signal, and send the offset phase signal to the digital-to-analog conversion unit; The digital-to-analog conversion unit is configured to receive the offset phase signal, perform digital-to-analog conversion processing on the offset phase signal, obtain the radio frequency signal, and send the radio frequency signal to the power amplification module.

3. A polar coordinate based range finder launch device according to claim 1, wherein, The coordinate conversion unit comprises a pre-distortion processing element, wherein: The pre-distortion processing element is configured to perform pre-distortion processing on the amplitude signal according to formula (4), and send the pre-distortion processed amplitude signal to the amplitude drive control module; （4）； wherein the formula (4) is is the amplitude signal after pre-distortion processing, is the amplitude signal before pre-distortion processing, is a coefficient of a polynomial.

4. A polar coordinate based rangefinder transmission method, characterized by, The polar coordinate-based rangefinder transmitting device of any one of claims 1-3, the device comprising a baseband signal processing module, an amplitude drive control module, a phase signal processing module, and a power amplification module, the method comprising: obtaining a baseband signal through the baseband signal processing module, performing decomposition and conversion processing on the baseband signal to generate an amplitude signal and a phase signal, sending the amplitude signal to the amplitude drive control module, and sending the phase signal to the phase signal processing module; receiving the amplitude signal through the amplitude drive control module, performing pulse width modulation and voltage amplification processing on the amplitude signal to obtain a pulse width modulation signal, and sending the pulse width modulation signal to the power amplification module; receiving the phase signal through the phase signal processing module, performing phase offset and digital-to-analog conversion processing on the phase signal to obtain a radio frequency signal, and sending the radio frequency signal to the power amplification module; receiving the pulse width modulation signal and the radio frequency signal through the power amplification module, performing drain amplification processing on a target transmission signal according to the pulse width modulation signal, performing switch mode amplification processing on the target transmission signal according to the radio frequency signal, and transmitting the target transmission signal.

5. The method of claim 4, wherein, The baseband signal processing module comprises a pulse generation unit and a coordinate conversion unit, and the obtaining of the baseband signal through the baseband signal processing module, the decomposition and conversion processing of the baseband signal to generate an amplitude signal and a phase signal, the sending of the amplitude signal to the amplitude drive control module, and the sending of the phase signal to the phase signal processing module comprise: obtaining the baseband signal through the pulse generation unit, performing decomposition processing on the baseband signal according to formula (5) to obtain an in-phase path signal and a quadrature path signal, and sending the in-phase path signal and the quadrature path signal to the coordinate conversion unit; （5）； wherein, in the formula (5), is a baseband signal, is an in-phase path signal, is a quadrature path signal, is a carrier frequency, is time; The in-phase channel signal and the quadrature channel signal are received by the coordinate conversion unit, and the in-phase channel signal and the quadrature channel signal are processed according to formula (6) to obtain an amplitude signal; （6）； wherein, in the formula (6), is an amplitude signal, is an in-phase path signal, is a quadrature path signal; The amplitude signal is pre-distortion processed by the coordinate conversion unit, and the pre-distortion processed amplitude signal is sent to the amplitude drive control module; The in-phase channel signal and the quadrature channel signal are processed by the coordinate conversion unit according to formula (7) to obtain a phase signal, and the phase signal is sent to the phase signal processing module; （7）； wherein, in the formula (7), is a phase signal, is an in-phase path signal, is a quadrature path signal.

6. The method of claim 5, wherein, The amplitude drive control module includes an envelope modulation unit and a drive amplification unit. The amplitude signal is received by the amplitude drive control module, and the amplitude signal is pulse width modulated and voltage amplified to obtain a pulse width modulated signal. The pulse width modulated signal is sent to the power amplification module, including: The amplitude signal sent by the coordinate conversion unit is received by the envelope modulation unit, and the amplitude signal is compared with a preset high-frequency carrier signal. When the amplitude value of the amplitude signal is greater than the amplitude value of the high-frequency carrier signal, a high level is output. Otherwise, a low level is output. The high level and the low level are integrated by the envelope modulation unit to obtain an initial pulse width modulated signal, and the initial pulse width modulated signal is sent to the drive amplification unit. The initial pulse width modulated signal is received by the drive amplification unit, and the initial pulse width modulated signal is voltage amplified to obtain a pulse width modulated signal. The pulse width modulated signal is sent to the power amplification module.

7. The method of claim 5, wherein, The phase signal processing module includes a digital synthesis unit and a digital-to-analog conversion unit. The phase signal is received by the phase signal processing module, and the phase signal is phase shifted and digitally converted to obtain a radio frequency signal. The radio frequency signal is sent to the power amplification module, including: The phase signal sent by the coordinate conversion unit is received by the digital synthesis unit, and the phase signal is offset according to a preset phase offset value to obtain an offset phase signal. The offset phase signal is sent to the digital-to-analog conversion unit. The offset phase signal is received by the digital-to-analog conversion unit, and the offset phase signal is digitally converted to obtain the radio frequency signal. The radio frequency signal is sent to the power amplification module.

8. The method of claim 5, wherein, The coordinate conversion unit includes a pre-distortion processing element. The amplitude signal is pre-distortion processed by the coordinate conversion unit, and the pre-distortion processed amplitude signal is sent to the amplitude drive control module, including: The amplitude signal is pre-distortion processed by the pre-distortion processing element according to formula (8), and the pre-distortion processed amplitude signal is sent to the amplitude drive control module; （8）； wherein the formula (8) is is the amplitude signal after pre-distortion processing, is the amplitude signal before pre-distortion processing, is a coefficient of a polynomial.

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