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 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 Progesterone Cream 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 CALENDULA SHAMPOO channel phase error and motion error is then proposed.Finally, a simulation and real data processing are provided to demonstrate the effectiveness of the proposed method.