分布式干涉仪鉴相性能分析

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中图分类号： TN97 文献标志码： A

Abstract：By overcoming the limitations of baseline length，distributed interferometers can improve the estimation accuracy of targets’direction significantly. However the time-frequency difference of arrival is also amplified，which breaks the narrowband assumption used in traditional interferometers.The signal model of distributed interferometer is established to analyze the impact on phase discrimination and simulation validations are conducted.The results show that typical distributed inter ferometer systems，by appropriately selecting accumulation methods and frequencies，and compensating the time difference，can achieve phase discrimination accuracy comparable to that of signal-platform interferometers.

KeyWords：distributed interferometer；time-frequency difference of arrival；phase discrimination withaccumulation

0 引言

分布式干涉仪由多个独立采集的相位干涉节点组成，各节点通过高精度时频同步实现分布式相参采集。（剩余7044字）