摘要
跳频通信技术在数字通信中有着重要应用,针对通信侦察的需要,对跳频对称差分相移键控(Symmetrical Differential Phase Shift Keying,SDPSK)调制信号的特征进行了分析,依据其特征,提出了在宽带接收条件下侦测跳频SDPSK信号的一种算法。算法包括频率跳变点检测和调制参数测量,主要在现场可编程门阵列(FPGA)中实时实现,具有高速、模块化等特点,对关键部分的具体实现进行了分析,最后通过硬件测试验证了该算法的正确性和可行性。
The frequency hopping technology has important application in digital communication. Aiming at the demand in communication reconnaissance receiver, this paper analyzes the characteristics of frequency hopping SDPSK signals. An algorithm of interception and detection of frequency hopping SDPSK signals in broad band is proposed,including the detection of frequency hopping time and the measurement of parameter. The algorithm is implemented in real time in FPGA. It has some advantages such as high speed and modularization. The analysis of the implementation is given. Finally the correctness and feasibility of this scheme are validated through hardware testing.
出处
《无线电通信技术》
2013年第5期78-80,共3页
Radio Communications Technology
