参数调制多载波雷达通信共享信号设计

摘要

雷达通信一体化是减少电子平台体积与电磁干扰的一种有效途径，而共享信号的研究是实现雷达通信一体化的关键技术。该文提出了一种基于Chirp信号的多载波雷达通信共享信号，其主载波采用唯一Chirp信号实现雷达功能，副载波通过改变调频率和初始频率参数组合的Chirp信号调制通信信息。分析了共享信号的模糊函数以及参数设计方法，并对其处理过程及系统性能进行了研究。仿真结果表明，该信号具有较低误码率和高稳健性特性，使用该共享信号可在微量降低雷达性能的前提下实现通信数据的传输。%Communication signals are vital to the implementation of integrated radar and communication, which is an effective way to reduce platform volume and electromagnetic interference. In this paper, an integrated radar and communication signal based on multicarrier parameter modulation chirp signal is proposed. Its main carrier adopts the unique chirp signal to implement radar function, while communication information is modulated by the subcarrier with different chirp rates and initial frequency chirp signal. The signal property is analyzed by ambiguity function, and the processing and system performance are studied. Finally, simulation results demonstrate that the proposed sharing signal has a low symbol error rate and high robustness, and communication data transmission can be implemented by slightly degrading the radars performance.