雷达与通信系统一体化可以实现电子资源的共享。提出并设计了一种宽带雷达通信一体化波形———随机调制线性调频步进信号,在实现雷达成像的同时实现数据通信。该信号充分利用现有的随机步进线性调频信号波形设计上的高度灵活性特点,以其子脉冲的载波频率调制通信数据,以子脉冲调频斜率的方向表示地址信息,实现了点到多点通信;分析计算了一体化信号下的信道容量、多址信号的正交性和接收机错误概率等通信性能指标;提出了随机化预处理方法来解决一体化信号在雷达成像中的问题,利用统计相关法实现宽带雷达的一维距离成像,提出并推导了部分参数对成像效果的影响。最后,从通信和雷达成像两方面仿真验证了该一体化信号的可用性和有效性。
The radar and communication integration system can share the same electronic appliance and save the power resource.A kind of waveform for integrated wide-band radar and communication system is proposed to implement radar imaging and data communication at the same time,which is named as random modulated lin-ear frequency stepped chirp signal.This waveform makes use of the high degree design flexibility of random stepped linear frequency modulated signal,and communication and address information is modulated on the car-rier frequency and frequency rate respectively,which accomplishes the point to multi-point communication. Secondly,communication performance indexes,such as channel capacity,orthogonality of different access sig-nal and receiver error probability are analyzed and calculated.Thirdly,random coding on the communication da-ta is put forward to solve the problem occurred in radar imaging,which is implemented by using the statistic correlation method,and the effect of some parameters on radar imaging result is deduced.Finally,simulations and analysis results prove its validation in the radar and communication system.