基于FPGA的UWB雷达PPM调制解调系统

Design of PPM System of UWB Radar Based on FPGA

超宽带UWB无线通信技术是一种基于直接发射窄脉冲的新技术,因其具有低功耗、良好的抗干扰和抗多径能力、穿透性能好等特点,特别适用于隐藏活动目标检测和近距离数据传输。用于检测隐藏活动目标的超宽带雷达就是基于基带无载波极窄脉冲的,有着广阔的应用前景。对比超宽带的多种调制解调方式选取了脉冲位置调制。介绍了使用Verilog语言在FPGA上实现PPM调制解调器,实现了UWB雷达发送窄脉冲进行基带调制。

Ultra Wide Band is a new wireless communication technology based on nano - second width pulse. Because of its low power consumption, good ability of anti - interference, anti - multiple - path and good penetrating ability, more comprehensive attention has been taken to data transfer and hidden target detection. Ultra wideband radar, using the promising and novel radio technology in detecting hidden targets,has a broad application prospect. Compared with other modulators and demodulators,PPM is chosen. By modeling,designing in Verilog language,and down -loading the designed programs into a FPGA,it can process base signals of UWB for very narrow pulses.