中文摘要：

多发多收超宽带雷达能实时探测到目标的距离向和方位向信息,在地质勘测、生命救援、穿墙目标跟踪等领域具有重要的应用价值。该文提出一种基于射频开关切换的伪随机编码超宽带多发多收雷达设计方法,研制出一套伪随机编码超宽带MIMO雷达系统。为了降低系统的成本和复杂性,采用射频开关切换的方法来实现多发多收。由于射频开关的耐压值有限,采用峰值功率为18 d Bm的伪随机编码信号作为雷达发射信号。最后通过混合采样方法实现超宽带信号的采样接收,并且调用FPGA内部的DSP硬核来进行实时脉冲压缩,以缓解后续数据处理运算量大的问题。实验结果表明,该雷达系统能实时探测到目标的方位向和距离向信息。

英文摘要：

A Multiple-Input Multiple-Output（MIMO） ultra-wideband radar can detect the range and azimuth information of targets in real time. It is widely used for geological surveys, life rescue, through-wall tracking,and other military or civil fields. This paper presents the design of an ultra-wideband pseudo random coded MIMO radar that is based on Radio Frequency（RF） switches and implements a MIMO radar system. RF switches are employed to reduce cost and complexity of the system. As the switch pressure value is limited, the peak power of the transmitting signal is 18 d Bm. The ultra-wideband radar echo is obtained by hybrid sampling, and pulse compression is computed by Digital Signal Processors（DSPs） embedded in an FieldProgrammable Gate Array（FPGA） to simplify the signal process. The experiment illustrates that the radar system can detect the range and azimuth information of targets in real time.