A Joint Estimation Method of the Channel Phase Error and Motion Error for Distributed SAR on a Single Airborne Platform Based on a Time-Domain Correlation Method

A Joint Estimation Method of the Channel Phase Error and Motion Error for Distributed SAR on a Single Airborne Platform Based on a Time-Domain Correlation Method

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Distributed synthetic aperture radar (SAR) is iphone 14 price arizona a system in which transmitting or receiving arrays are distributed on multiple platforms or at different locations on one platform.Distributed SAR can be used for high-resolution wide-swath (HRWS) imaging.The typical platform used for distributed SAR is a satellite constellation, which has long baselines and an ideal trajectory.Instead of satellite constellations, this paper focuses on distributed SAR on a single airborne platform, for which the channel error and motion error are coupled.

Furthermore, the traditional channel error estimation methods are invalid.Thus, based on the time-domain correlation method (TDCM), this article proposes a joint estimation method of the channel phase error and motion error for the distributed SAR on a single airborne platform.Firstly, a channel error and motion error coupled phase error model of the distributed SAR is constructed.A joint estimation method of the channel phase error and motion error is then proposed.

Finally, a simulation and real data processing are provided to demonstrate the here effectiveness of the proposed method.