通信化雷达信息分段波形设计与处理

Design and Processing of Information Segmentation Waveform of Communicational Radar

通过在发射信号中嵌入发射站位置、发射时刻等辅助信息,通信化雷达能够实现无通信链路情况下双基地探测能力,广泛适用于分布式探测场景。通信化雷达应用于机载平台常需使用中高重频信号,占空比的约束使得通信化雷达无法在一个脉冲内嵌入完整的通信信息。针对该问题,本文提出了将辅助信息分段嵌入到脉冲串的信息分段波形设计方法,设计了“两层匹配+两次积累”的信号处理方案,对比分析了该波形的误码率和输出信噪比,验证了该波形在中、高重频场景下的适用性。

By embedding auxiliary information,such as the transmitter position and the launch time into the transmitted signal,the communicational radar can realize the bistatic detection capability without a communication link,which is capable for distributed detection scenarios.The application of communicational radar to airborne platforms often requires the use of medium and high repetition frequency signals.The constraint of the duty cycle makes it impossible for a communicational radar to embed complete communication information within a single pulse.Aiming at this problem,we propose an information segment waveform design method that embeds auxiliary information segments into pulse trains and design a signal processing scheme of“two⁃layer matching+two⁃time accumulation”.The bit error rate and output signal⁃to⁃noise ratio of the waveform are compared and analyzed.The applicability of the waveform was verified for medium and high repetition scenarios.