干涉仪测向中相位差精确测量技术研究

Accurate Phase Difference Measure Approaches of Interferometer Direction Finding System

相位差的精确测量在以相位为参考信息的测向体制中十分重要,直接影响了测向的精度。重点研究了相位差精确测量技术。在详细分析3种有效的测量方法基本原理基础上,比较精确地获取了信号的相位差,并通过大量的仿真实验比较3种方法在不同情况下的性能,为实际应用中选择合适的方法提供了依据。

Accurate phase difference measurement is very important to direction finding system based on phase, and it affects the DF precision directly. Therefore, the accurate phase difference measurement is mainly studied here. After analyzing the principles of three effective measurement approaches, the accurate phase difference is measured. The performances of three approaches are compared in a large number of simulation experiments, which provides reference for choosing the proper approaches in the application.