传感与通信一体化FMCW信号处理技术研究

兼具传感与宽带通信功能的无线信号及其处理技术是近年来研究的热点问题之一。本课题研究传感与通信一体化的调频连续波（FMCW）信号处理关键技术。FMCW信号具有抗多普勒频移、压缩脉冲探测特性，在高速运动环境下的宽带通信及警、军用目标传感探测应用领域具有广泛的应用。本项目研究内容包括宽带FMCW高效调制信号的设计及其衰落信道环境下的信号检测处理算法；设计兼顾无线通信与目标感知的信号体制及收发分立的双基地目标感知体制，研究基于特征波形的相干目标探测算法，以实现高精度、远距离和低功耗的地面目标感知；基于时频信号处理技术和多点接收无线网络协作传感算法，研究隐藏目标或移动目标的位置感知，以获得一体化、大容量、抗多普勒频移、高灵敏和高精度目标探测的FMCW传感与通信新体制。

The signal and its processing for both sensing and wireless wideband communication is the hot issue in recent years. The research aims at the key techniques including the design of the frequency-modulated continuous-wave (FMCW) signal and the signal processing suitable for the integration of sensing and communications. With the abilities of anti-Doppler shift and pulse compression, FMCW has broad application prospect in wideband communication and object detection for military and police. The first subject of the research is to design M-ary modulation for FMCW signal to improve transmission rate and time-bandwidth product. The second aspect of the research is to propose new FMCW signal taking into account both sensing and communication functions. Base on the transmitter-receiver structure in communication, namely the bistatic structure in radar, the FMCW signal processing for ground target detection is the key problem. The coherent detection by the received characteristic wave of FMCW has the advantages of high precision, long distance, and low cost. Advanced time-frequency signal processing and distributed sensing by receivers in network are desired to improve performance. The research object is to obtain a new FMCW system for both sensing and wideband communication with the ability of big transmission capacity, anti-Doppler shift, high-precision object detection.