摘要
介绍了数字接收机测频的一些重要算法,对这些数字测频算法进行了比较全面的分析,包括时域算法、频域算法、时 频分析算法、特征子空间分解算法等,给出了算法的性能、适用范围,并在此基础上提出一种测频方案,同时给出了该方案的测频性能仿真结果。该方案结合了一些算法的优点,较好地解决了传统数字测频中截获概率和测频时间的矛盾,使得宽带、高速、高精度及同时多信号测量成为可能。
This paper introduces several important algorithms for the digital frequency measurement with the digital receiver. It also analyses these algorithms in detail, including algorithms based on the time field, frequency field, timefrequency analysis, eigensubspace decomposition and so on. Performance and applied situation of these algorithms are also given. Then it presents a scheme for the frequency measurement and simulation results of it's performance. This scheme combines merits of some algorithms and resolves the problem that exists in the traditional frequency measurement between the capture probability and time cost well. This scheme makes it possible to estimate the carrier frequency with the broadband, high speed and accuracy and to measure multisignals at the same time.
出处
《雷达与对抗》
2002年第4期24-29,共6页
Radar & ECM
关键词
数字接收机
信道化接收机
数字测频
digital receiver
channelized receiver
digital frequency measurement
