Stepping frequency ground penetrating radar transmitting and receiving system based on RFSOC

Abstract

The utility model relates to the technical field of radar detection, and discloses an RFSOC-based step frequency ground penetrating radar transmit-receive system, which comprises a transmit-receive antenna, a signal power amplifier, an RFSOC radio frequency circuit board and a PC terminal, the RFSOC radio frequency circuit board is integrated with an ARMCorter-A53 processor, a programmable logic unit, a clock unit, a DAC transmitting unit, an ADC receiving unit and a data transmission unit, and the ARMCorter-A53 processor, the programmable logic unit, the clock unit, the DAC transmitting unit, the ADC receiving unit and the data transmission unit are integrated on the RFSOC radio frequency circuit board. The system integration level is greatly improved, the number of hardware modules is reduced, the system complexity is reduced, the signal power amplifier is connected with the transceiving antenna, and the signal power amplifier is used for enhancing the power of a transmitted signal to ensure that the signal can be effectively transmitted to the ground; the DAC transmitting unit of the RFSOC radio frequency circuit board outputs a radio frequency signal to the input end of the signal power amplifier, and an echo signal amplified by the signal power amplifier is input to the ADC receiving unit of the RFSOC radio frequency circuit board; and the PC terminal is used for data processing and detection result display. The response speed of the system is improved, and long-time operation in outdoor high-speed scene application is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to radar detection technical field, concretely relates to a kind of based on RFSOC's step frequency ground penetrating radar transceiver system. BACKGROUND

[0002] With the rapid development of highway, bridge and other infrastructure construction, the demand for underground structure detection is increasing. As an efficient underground detection technology, step frequency ground penetrating radar can effectively detect underground targets without damaging the surface. The existing step frequency ground penetrating radar system mainly uses vector network analyzer, controller and DDS (direct digital frequency synthesis) chip to realize. Although these technologies meet the detection requirements to some extent, they have the following shortcomings:

[0003] Traditional step frequency ground penetrating radar system is usually composed of multiple independent modules, such as vector network analyzer, controller, DDS chip, etc. The modules are relatively complex, resulting in large system size, inconvenient to carry, and prone to failure during debugging and maintenance. Due to hardware limitations, the existing step frequency ground penetrating radar system has a narrow bandwidth, which limits the detection resolution and detection depth. In the detection of complex geological structure or small target, it is difficult to meet the actual demand. The existing system needs to process data through external equipment (such as PC) during data acquisition and processing, resulting in slow data processing speed and poor real-time performance. This has certain limitations for dynamic target detection and real-time imaging applications. The traditional step frequency ground penetrating radar system uses more hardware modules, resulting in high overall power consumption, which is not conducive to long-term field operation.

[0004] In view of this, we propose a step frequency ground penetrating radar transceiver system based on RFSOC. Utility model content

[0005] The present invention aims to solve the technical problem of the existing step frequency ground penetrating radar system, which usually requires multiple independent modules to work together, such as vector network analyzer, controller, DDS chip, etc., resulting in large system size, inconvenient to carry, complex on-site deployment, limited by hardware equipment and signal processing method, and certain limitations in bandwidth, affecting the resolution and detection depth of the radar system for underground targets.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] The application discloses a step frequency ground penetrating radar transceiver system based on RFSOC, which comprises a transceiving antenna, a signal power amplifier, an RFSOC radio frequency circuit board and a PC end.

[0008] During transmission, the transceiving antenna is connected with the signal power amplifier, the signal power amplifier receives a low-power radio frequency signal from the RFSOC radio frequency circuit board, and the amplified signal is transmitted to the transceiving antenna.

[0009] During reception, the weak echo signal collected by the transceiving antenna is also amplified by the signal power amplifier for subsequent processing.

[0010] The transceiving antenna is responsible for transmitting the detection signal of the radar system and receiving the echo signal reflected from the underground, and the PC end, the signal power amplifier is electrically connected with the transceiving antenna through a cable, and the signal power amplifier is used for enhancing the power of the transmitted signal to ensure that the signal can be effectively transmitted to the underground; the DAC transmitting unit of the RFSOC radio frequency circuit board outputs a radio frequency signal to the input end of the signal power amplifier, and the amplified echo signal of the signal power amplifier is input to the ADC receiving unit of the RFSOC radio frequency circuit board; the PC end is used for data processing and display of detection results, and the RFSOC radio frequency circuit board is electrically connected with the PC end through the data transmission unit.

[0011] As a preferred, the ARMCorter-A53 processor on the RFSOC radio frequency circuit board controls the DAC transmitting unit to generate a step frequency signal through the programmable logic unit, the step frequency signal is output to the signal power amplifier through the DAC transmitting unit of the RFSOC radio frequency circuit board, the signal power amplifier enhances the power of the signal, and then the signal is transmitted to the underground through the transceiving antenna.

[0012] As a preferred, the signal reflected by the underground target is received by the transceiving antenna and then transmitted to the signal power amplifier for amplification, the amplified signal is sent back to the ADC receiving unit of the RFSOC radio frequency circuit board for digitization, the programmable logic unit in the RFSOC radio frequency circuit board processes the digitized signal, the processed data is sent to the PC end through the data transmission unit, and the PC end further processes and displays the data by using corresponding software to generate a radar image or perform target analysis.

[0013] As a preferred, the clock unit on the RFSOC radio frequency circuit board is responsible for providing a stable time reference to ensure signal synchronization.

[0014] As preferred, the RFSOC radio frequency circuit board model is XCZU47DR-FFVE1156-2-E, and the maximum sampling rate of the RFSOC radio frequency circuit board is 7GHz at the DAC transmitting unit and 5GHz at the ADC receiving unit.

[0015] As preferred, the RFSOC-based stepped frequency ground penetrating radar transceiver system further comprises an electromagnetic shielding box, the RFSOC radio frequency circuit board is installed in the electromagnetic shielding box, and the electromagnetic shielding box is used to protect the RFSOC radio frequency circuit board from external electromagnetic interference. The stability of the signal and the performance of the system are ensured, and the electromagnetic shielding box is not directly connected with the PC end. However, the box body of the electromagnetic shielding box contains a connection port, so as to connect the RFSOC radio frequency circuit board with the PC end.

[0016] Compared with the prior art, the technical effects and advantages of the utility model are:

[0017] The RFSOC radio frequency circuit board in the RFSOC-based stepped frequency ground penetrating radar transceiver system integrates the ARMCortex-A53 processor, the programmable logic unit, the clock unit, the DAC transmitting unit, the ADC receiving unit and the data transmission unit on one circuit board, greatly improves the system integration, reduces the number of hardware modules and reduces the system complexity. The DAC transmitting unit and the ADC receiving unit on the RFSOC radio frequency circuit board have high sampling rates (7GHz and 5GHz respectively), which provide the system with wider bandwidth and higher resolution, so that the underground target can be more accurately detected. The programmable logic unit inside the RFSOC can process digital signals in real time, and the high-performance computing capability of the ARMCortex-A53 processor enables the system to realize fast data processing and real-time imaging, improving the response speed of the system. The improvement of integration and advanced process technology help to reduce the overall power consumption of the system, which is very beneficial for long-term operation in the field.

[0018] The use of the electromagnetic shielding box protects the RFSOC radio frequency circuit board from external electromagnetic interference, ensuring the stability of the signal and the reliability of the system. The programmable logic unit allows users to customize signal processing algorithms as needed, enhancing the flexibility and scalability of the system. The integrated design makes the entire system more compact, facilitating portability and on-site deployment, while reducing maintenance workload. Although the initial investment in RFSOC technology may be higher, in the long run, the overall cost-effectiveness is higher due to the high performance and low maintenance requirements of the system.

[0019] The radio frequency direct sampling chip has the characteristics of high radio frequency link integration and easy development, and the step frequency ground penetrating radar is realized by using the RFSOC radio frequency direct sampling platform, and the generation and reception of the coherent step frequency signal are realized by controlling the NCO of the transceiver link. The clock resources of the FPGA and the advantages of parallel multi-channel transmission and reception of data are fully utilized in the system to make the system run at the fastest rate. All frequency points are designed to complete the transmission and reception within 3ms, and the data is sent to the PC end, so that the complete radar system design is completed. In summary, the step frequency ground penetrating radar transceiver system based on RFSOC has significant technical effects and advantages in performance, integration, real-time performance, reliability, portability and cost-effectiveness. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a connection relationship diagram of the utility model;

[0021] Figure 2 is a state diagram of the utility model integrated and installed on a test vehicle;

[0022] Figure 3 is a state diagram of the utility model scanning a sand pit target;

[0023] Figure 4 is a sand pit scanning result diagram of the utility model before data processing;

[0024] Figure 5 is a sand pit scanning result diagram of the utility model for a 5cm target;

[0025] Figure 6 is a sand pit scanning result diagram of the utility model for a 10cm target;

[0026] Figure 7 is a sand pit scanning result diagram of the utility model for a 22cm target.

[0027] In the figure: 1, the transceiver antenna; 2, signal power amplifier; 3, RFSOC radio frequency circuit board; 31, ARM Corter-A53 processor; 32, programmable logic unit; 33, clock unit; 34, DAC transmitting unit; 35, ADC receiving unit; 36, data transmission unit; 4, PC end; 5, electromagnetic shielding box; a, sand pit. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] The following description will be made in conjunction with the accompanying drawings Figures 1-7 The application is further described in detail,

[0030] The embodiment of the application discloses a step frequency ground penetrating radar transceiver system based on RFSOC, which comprises a transceiving antenna 1, a signal power amplifier 2, an RFSOC radio frequency circuit board 3 and a PC end 4. The RFSOC radio frequency circuit board 3 is integrated with an ARM Corter-A53 processor 31, a programmable logic unit 32, a clock unit 33, a DAC transmitting unit 34, an ADC receiving unit 35 and a data transmission unit 36. The DAC transmitting unit 34 converts digital signals into analog signals and transmits the analog signals out through the signal power amplifier 2. The ADC receiving unit 35 is used for converting amplified analog echo signals into digital signals for subsequent processing.

[0031] During transmission, the transceiving antenna 1 is connected with the signal power amplifier 2. The signal power amplifier 2 receives low-power radio frequency signals from the RFSOC radio frequency circuit board 3 and transmits the amplified signals to the transceiving antenna 1.

[0032] During reception, the weak echo signals collected by the transceiving antenna 1 are also amplified by the signal power amplifier 2 for subsequent processing.

[0033] The transceiving antenna 1 is responsible for transmitting detection signals of the radar system and receiving echo signals reflected from the ground. The signal power amplifier 2 is electrically connected with the transceiving antenna 1 through a cable, and is used for enhancing the power of the transmitted signals to ensure that the signals can be effectively transmitted to the ground. The DAC transmitting unit 34 of the RFSOC radio frequency circuit board 3 outputs radio frequency signals to the input end of the signal power amplifier 2. The amplified echo signals of the signal power amplifier 2 are input to the ADC receiving unit 35 of the RFSOC radio frequency circuit board 3. The PC end 4 is used for data processing and display of detection results. The RFSOC radio frequency circuit board 3 is electrically connected with the PC end 4 through the data transmission unit 36.

[0034] Compared with the circuit scheme of the traditional FPGA on-board radio frequency chip, the FPGA on-board radio frequency chip uses the Zynq-UltraScale+RFSOC series chip of the Xilinx company. The biggest advantage of the chip is that the radio frequency transceiver control circuit, the FPGA and the ARM control unit are integrated in the same chip, which can greatly improve the running efficiency of the system and reduce the complexity of the system design during the design process.

[0035] Signal Generation and Transmission: The ARM Cortex-A53 processor on the RFSOC radio frequency board 3 controls the DAC transmission unit 34 to generate stepped frequency signals through programmable logic unit 32. These stepped frequency signals are converted into analog signals by the DAC transmission unit 34. The signal power amplifier 2 receives these low-power radio frequency signals and amplifies them to a sufficient power level for transmission through the transceiver antenna 1 to the underground.

[0036] Signal Reception and Processing: The signals reflected by the underground target are received by the transceiver antenna 1, which are usually weak and need to be amplified by the signal power amplifier 2. The amplified signals are sent back to the ADC receiving unit 35 of the RFSOC radio frequency board 3 for digital processing. The digitized signals are further processed in the programmable logic unit 32 of the FPGA, such as filtering, denoising, signal accumulation, etc. The processed data is sent to the PC end 4 through the data transmission unit 36, and the final data processing and display are performed by the PC end 4 software, such as generating radar images.

[0037] Clock Synchronization: The clock unit 33 on the RFSOC radio frequency board 3 provides a stable time reference to ensure signal synchronization, which is crucial for the stepped frequency radar system as it relies on frequency changes to obtain target information.

[0038] RFSOC integrates multiple functions on a single chip, including processors, FPGA logic, radio frequency transceivers, etc., reducing the size and weight of the system and improving reliability. The integrated DAC and ADC units can provide higher sampling rates and wider bandwidths, helping to improve the detection resolution and sensitivity of the radar system. Programmable logic unit 32 allows users to customize signal processing algorithms according to specific application requirements, increasing the flexibility of the system. The high-performance processor and parallel processing capabilities of RFSOC can achieve fast data processing, which is crucial for real-time applications. Due to the high integration characteristics of RFSOC, the development difficulty of the system is reduced, shortening the time from design to market of the product. Although RFSOC may have higher costs, overall, due to the improved integration of the system, the demand for other hardware components can be reduced, thereby reducing the overall system cost. This radar system can be applied to geological exploration, infrastructure detection, security monitoring, etc. multiple fields, with wide application prospects.

[0039] Through the above description of principles and benefits, it can be clearly seen that the stepped frequency ground penetrating radar transceiver system based on RFSOC has obvious advantages in performance, flexibility and development efficiency.

[0040] Signal Generation and Transmission: The ARM Corter-A53 processor 31 on the RFSOC radio frequency board 3 controls the DAC transmission unit 34 to generate a stepped frequency signal through the programmable logic unit 32. The stepped frequency signal is output to the signal power amplifier 2 through the DAC transmission unit 34 of the RFSOC radio frequency board 3. After the signal power amplifier 2 enhances the power of the signal, the signal is transmitted to the underground through the transceiver antenna 1.

[0041] Signal Reception and Processing: The signal reflected by the underground target is received by the transceiver antenna 1 and then transmitted to the signal power amplifier 2 for amplification. The amplified signal is sent back to the ADC receiving unit 35 of the RFSOC radio frequency board 3 for digitization. The programmable logic unit 32 inside the RFSOC radio frequency board 3 processes the digitized signal, and the processed data is sent to the PC end 4 through the data transmission unit 36. The PC end 4 uses corresponding software to further process and display the data to generate radar images or perform target analysis.

[0042] The clock unit 33 on the RFSOC radio frequency board 3 is responsible for providing a stable time reference to ensure signal synchronization. This is crucial for stepped frequency radar systems, as they rely on frequency changes to obtain target information.

[0043] The RFSOC radio frequency board 3 model is XCZU47DR-FFVE1156-2-E, and the maximum sampling rate of the DAC transmission unit 34 is 7GHz, and the maximum sampling rate of the ADC receiving unit 35 is 5GHz.

[0044] The maximum sampling rate of the DAC transmission unit 34 is 7GHz: This means that high-frequency broadband signals can be generated, which helps to improve the resolution of the radar system, enabling the system to detect smaller targets or more detailed geological structures.

[0045] The maximum sampling rate of the ADC receiving unit 35 is 5GHz: High-frequency sampling allows the system to accurately capture the returned radar signals, thereby improving the accuracy of signal processing and detection performance.

[0046] The maximum NCO carrier setting can reach half of the sampling rate, and the maximum supported data clock on the data link is 800MHz; The carrier frequency of the NCO (digital oscillator) can reach half of the high sampling rate, which means that high frequency resolution can be achieved in the radar system, and for stepped frequency radar, the frequency change can be controlled more finely, thereby improving the detection accuracy.

[0047] Data link transmission: Maximum supported data clock is 800MHz: This indicates that the system has fast data transmission capability, which helps to realize real-time or near-real-time signal processing, which is very important for applications that require fast response.

[0048] The RFSOC-based stepped frequency ground penetrating radar transceiver system further comprises an electromagnetic shielding box 5, the RFSOC radio frequency circuit board 3 is installed in the electromagnetic shielding box 5, and the electromagnetic shielding box 5 is used for protecting the RFSOC radio frequency circuit board 3 from external electromagnetic interference. Ensure the stability of the signal and the performance of the system, the electromagnetic shielding box 5 is not directly connected with the PC end 4. But the box body of the electromagnetic shielding box 5 contains a connection port, so as to connect the RFSOC radio frequency circuit board 3 with the PC end 4. The flexibility and expansibility of the system connection are maintained. In the case of complex external electromagnetic environment, the shielding box can prevent the interference signal from affecting the performance of the radar system, and ensure the signal stability and reliability. The shielding box can reduce electromagnetic radiation, prevent external interference from entering the system, and also reduce the influence of the electromagnetic radiation generated inside the system on external equipment, so as to maintain the signal integrity. Preventing external interference is crucial to maintaining the high performance of the radar system, especially in high frequency applications, electromagnetic interference may cause signal distortion, affecting the detection ability of the radar.

[0049] The RFSOC-based stepped frequency ground penetrating radar transceiver system transmits electromagnetic waves in the frequency band of 200MHz-2GHz through the RFSOC radio frequency interface, the propagation process of the electromagnetic waves strictly follows Maxwell's equations, and the electromagnetic waves will be refracted and reflected when encountering changes in the dielectric constant of the medium. The ground penetrating radar designed this time detects geological structures and underground targets through the uneven medium boundary layer below the ground and the target echo;

[0050] The transmitting end and the receiving end of the ultra-wideband stepped frequency ground penetrating radar system realize carrier synchronization in the frequency hopping process to realize the coherent radar. According to the bandwidth B of the radar and the speed of light c, c / 2B can be calculated to obtain the stepped frequency signal system radar with ultra-high shallow layer detection resolution;

[0051] Compared with the traditional DDS radio frequency board matched with the FPGA development board radar system, the ground penetrating radar system designed this time can realize the stepped frequency control word writing and data signal processing in one chip. The high system integration advantage is that high-speed frequency hopping and high-speed signal processing can be realized;

[0052] In the process of receiving the echo of the radar system, the time width of the stepped frequency signal is designed to improve the signal-to-noise ratio (SNR) of the echo signal through coherent accumulation. After the accumulation of all frequency band stepped frequency data is completed, the accumulated data is cached through the BRAM block inside the FPGA. In the subsequent process of outputting the data to the host computer, the spectrum synthesis is carried out, and the original data is processed through windowing, averaging, IFFT and other signal processing on the host computer platform to realize radar SAR imaging.

[0053] The RFSOC-based stepped frequency ground penetrating radar transceiver system uses the characteristics of large time width and ultra-large equivalent bandwidth of stepped frequency signals to design a RFSOC-based stepped frequency ground penetrating radar system. The use of stepped frequency signals and RFSOC radio frequency direct sampling hardware greatly simplifies the design of the ground penetrating radar system compared to traditional ground penetrating radar systems, improving the efficiency of the radar system. At the same time, the ground penetrating radar system designed in this paper has the advantages of high flexibility, powerful performance, small size, and low power consumption.

[0054] In the sand test, the known targets were buried in the sand pit for detection. The sand test scene is shown in Figures 2-3 . The long box in the sand pit is the buried target position.

[0055] In this experiment, steel pipes were buried at 5 cm, 10 cm, and 22 cm in the sand pit for known target detection control tests. During the experiment, the test vehicle was scanned above the steel pipe, and the scanning results are shown in Figures 4-7 ;

[0056] In Figure 4 , the coupling position of the antenna can be clearly seen, and due to the strong coupling wave, the target echo is submerged. In Figure 5 , 6, 7, B-Scan can be clearly seen after subsequent signal processing. Due to the relatively humid sand pit and the uneven softness of the sand in the actual test environment, the relative permittivity of this test fluctuates greatly. The relative permittivity in the sand pit is between 10 and 30. In order to highlight the deep target, distance gain control is performed in the sand pit experimental data Figure 6 , 7. According to the figure, the detection delay of the 5 cm deep steel pipe target is 2.1 ns, the detection delay of the 10 cm deep steel pipe target is 2.5 ns, and the detection delay of the 22 cm deep steel pipe target is 3.16 ns. From the detection results, as the known target depth increases, the target steel pipe B-Scan shows a trend of being farther and farther away from the surface of the sand pit.

[0057] The strong coupling wave caused by the coupling position of the antenna at the beginning of the experiment causes the target echo to be submerged, which indicates that the coupling effect needs to be considered in actual application and appropriate measures need to be taken to reduce its impact. The detection delay increases with the increase of the target depth, which shows that the radar system can determine the depth of the target according to the time delay of the echo signal. Due to the large fluctuation of the relative permittivity of the sand pit (between 10 and 30), the detection performance of the radar system may be affected to some extent, especially in terms of resolution and accuracy. In order to highlight the deep target, distance gain control was performed in the experiment, which shows that the gain needs to be adjusted according to the actual situation in radar signal processing to obtain the best detection effect.

[0058] The radar system can detect targets at different depths through experiments, proving the effectiveness and reliability of the system. The signal processing techniques in the experiment, such as range gain control, help improve the detection performance of the radar system in complex environments. The experiment was conducted in a humid environment with unevenly soft sand, indicating that the radar system has certain environmental adaptability.

[0059] Guidance for practical application: The quantitative data on the relationship between target detection time delay and depth obtained through experiments are of great significance for target positioning and depth estimation in practical applications. The experiment reveals the existence of coupling effects and other issues, providing empirical evidence for improving the design and optimization of the radar system.

[0060] Finally, it should be noted that the above is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features, as long as they are within the spirit and principles of the present application. Any modifications, equivalent substitutions, improvements, etc. made shall be included within the scope of protection of the present application.

Claims

1. A RFSOC-based stepped-frequency ground-penetrating radar transceiver system, comprising: The utility model relates to a kind of radar systems, including: Transmitting and receiving antenna (1), responsible for emitting the detection signal of radar system and receiving echo signal reflected from underground; Signal power amplifier (2), signal power amplifier (2) is electrically connected with transmitting and receiving antenna (1) by cable, and signal power amplifier (2) is used to enhance the power of sending signal to ensure that signal can effectively spread to underground; RFSOC radio frequency circuit board (3), ARMCorter-A53 processor (31) is integrated on RFSOC radio frequency circuit board (3), programmable logic unit (32), clock unit (33), DAC transmitting unit (34), ADC receiving unit (35), data transmission unit (36);The DAC transmitting unit (34) of RFSOC radio frequency circuit board (3) outputs radio frequency signal to the input end of signal power amplifier (2), and the echo signal amplified by signal power amplifier (2) is input to the ADC receiving unit (35) of RFSOC radio frequency circuit board (3); PC end (4), for data processing and display detection result, RFSOC radio frequency circuit board (3) is electrically connected with PC end (4) by data transmission unit (36).

2. The RFSOC-based stepped-frequency ground-penetrating radar transceiver system of claim 1, wherein: ARMCorter-A53 processor (31) on RFSOC radio frequency circuit board (3) generates step frequency signal by programmable logic unit (32) control DAC transmitting unit (34), and step frequency signal is output to signal power amplifier (2) by the DAC transmitting unit (34) of RFSOC radio frequency circuit board (3), and after signal power amplifier (2) enhances the power of signal, signal is transmitted to underground by transmitting and receiving antenna (1).

3. The RFSOC-based stepped-frequency ground-penetrating radar transceiver system of claim 1, wherein: The signal reflected by underground target is received by transmitting and receiving antenna (1) and is transmitted to signal power amplifier (2) for amplification, and the amplified signal is sent back to the ADC receiving unit (35) of RFSOC radio frequency circuit board (3) for digitization, and the programmable logic unit (32) inside RFSOC radio frequency circuit board (3) processes digitized signal, and the data after processing is sent to PC end (4) by data transmission unit (36), and PC end (4) uses corresponding software to further process and display data to generate radar image or carry out target analysis.

4. The RFSOC-based stepped-frequency ground-penetrating radar transceiver system of claim 1, wherein: Clock unit (33) on RFSOC radio frequency circuit board (3) is responsible for providing stable time reference to ensure signal synchronization.

5. The RFSOC-based stepped-frequency ground-penetrating radar transceiver system of claim 1, wherein: The model of RFSOC radio frequency circuit board (3) is XCZU47DR-FFVE1156-2-E, and the maximum sampling rate of DAC transmitting unit (34) of RFSOC radio frequency circuit board (3) is 7GHz, and the maximum sampling rate of ADC receiving unit (35) is 5GHz.

6. The RFSOC-based stepped-frequency ground-penetrating radar transceiver system of any one of claims 1-5, wherein, It also includes electromagnetic shielding box (5), RFSOC radio frequency circuit board (3) is installed in electromagnetic shielding box (5), and electromagnetic shielding box (5) is used to protect RFSOC radio frequency circuit board (3) from external electromagnetic interference.

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