步进频探地雷达具有灵敏度高、动态范围大、平均功率大等优点，设计并实现了一种基于射频片上系统芯片（radio frequency system on chip, RFSOC）的步进频探地雷达收发系统。该系统主要包含发射链路、接收链路、时钟单元、可程序化逻辑门阵列（field programmable gate array, FPGA）控制系统以及数据传输单元等模块，通过设置发射端与接收端的数控振荡器（numerically controlled oscillator, NCO）多片同步从而实现载波同频同相，保证雷达收发信号的相位相干性，并在数据传输单元中设计接收时窗。实验测试结果表明，该系统能够实现频率范围200 MHz ~ 2 GHz、步长2 MHz的步进频率信号发射和接收，能够实现对自由空间、沙坑以及沥青路面等多个场景目标的有效探测。

The stepped frequency ground penetrating radar has the advantages of high sensitivity, large dynamic range, and high average power. Radio frequency system on chip(RFSOC) based stepped frequency ground penetrating radar transceiver system design was designed and implemented. The system mainly includes modules such as the transmission link, reception link, clock unit, field programmable gate array (FPGA) control system, and data transmission unit. By setting multiple numerically controlled oscillator(NCO) for synchronization between the transmission and reception ends, the carrier was synchronized on the same frequency and phase, ensuring the phase coherence of radar transmission and reception signals. A receiving time window was also designed in the data transmission unit. The experimental test results show that the system can achieve the transmission and reception of step frequency signals with a frequency range of 200 MHz ~ 2 GHz and a step size of 2 MHz, and can effectively detect multiple scene targets such as free space, sand pits, and asphalt pavements.