一种相位编码序列恢复方法

文章首先给出了无模糊相位重构算法,在此基础上研究了不同调制样式信号相位差分的不同特性。结果显示：相位差分序列不仅能反映出信号的调制特性,对相位编码信号而言其还包含了相位编码序列信息。文章根据研究得到的基于相位差分序列的相位编码序列恢复算法进行仿真试验,得到了较好的结果,说明了所给算法的有效性。

A New Approach to Restoring the Phase-Coding Sequence

In many practical electronic systems, typically in ELINT systems, automatic analysis of Intrapulse modulation characteristics and especially the estimation of the corresponding modulation parameters are essentially necessary. For the problem of restoring the phase coding sequence of the phase-shift keying signal, a new method based on the phase difference that is highly tolerant to noise is introduced. In the paper, the relatively non-ambiguity restoral algorithm is first developed, which can give the "true" phase of the received signal, just as the simulations show. Following that, typical characteristics of the phase difference of differently modulated signals are discussed, which reveals that not only the type of the signal modulation is reflected in the phase difference sequence, but the information about the phase coding sequence is also included. The block diagram for the restoral of the phase coding sequence is present, followed by the computer simulations. Simulation results indicate the good performance for the given method, which represent an promising prospect.