一种基于软件无线电技术的低成本运动目标探测雷达

由于成本和频段规范的限制,民用的线性调频连续波(LFMCW)体制的毫米波雷达往往体积较小且作用距离较近。在一些对于作用距离较远的运动目标检测应用场合,现有的商用现成品(COTS)毫米波雷达无法满足要求。在现有商用现成品毫米波射频(RF)前端的基础上,设计了一种基于软件无线电(SDR)的线性调频连续波雷达原型,在一个以异构片上系统(SOC)处理器为核心器件的软件无线电平台上,采用距离多普勒处理的方法提高信号相干积累增益,通过增加较小成本获得了比现有民用毫米波雷达更大的改。实测验证表明,该雷达原型作用距离较远,并且具有灵活性高、成本低和小型化的特点。

A Low-cost SDR-based Moving Target Detection Radar

For the constraints on cost and spectrum regulations, millimeter-wave radars for civil use which adopting LFMCW (linear frequency modulated continuous wave) are with small size and short range. In some circumstances which require moving target detection with a longer range, the COTS (commercial off-the-shelf) millimeter-wave radars now available cannot meet the requirement in range. An SDR (software defined radio) platform based LFMCW radar prototype which employs the RF (radio frequency) front-end of the CTOS millimeter-wave radars was proposed. With the Range-Doppler processing implemented on the SDR platform which adopted a heterogeneous SOC (system-on-chip) as its core processor, coherent accumulation gain increased. Thus a longer detection range is achieved at a low cost compared to the millimeter-wave radars for civil use. Experiment shows the prototype has the features of high flexibility, low cost and small size, along with a relative long range.