NDLI: A Sequential Converted Measurement Kalman Filter with Doppler Measurements in ECEF Coordinate System

Content Provider	IET Digital Library
Author	Wu, Weihua Jiang, Jing Feng, Xun Qin, Xing
Abstract	When there is the correlation between Doppler and slant range, previous literatures have presented some sequential filter algorithms. However, they are only applied to simplified fixed radar’ s local coordinate system. As a result, a Sequential converted measurement Kalman filter (SCMKF) with Doppler measurements based on the Earth centered earth fixed (ECEF) coordinate system applicable to a moving airborne platform which has time varying attitude is proposed. Firstly, the correlated Doppler and range are decorrelated using the Cholesky factorization, then the converted position measurements are obtained by a series of coordinate transformation with unchanged range component and other observations, such as azimuth and elevation angles; the corresponding error covariances are derived which are used to the Converted measurement Kalman filter (CMKF). Finally the sequential filter is implemented for changed pseudo-Doppler measurements. The proposed method is validated through Monte Carlo test compared with the performance of CMKF with just converted position measurements and traditional SCMKF with Doppler which ignores the correlation between Doppler and range noises, and the conclusion is obtained that utilizing Doppler information correctly can improve tracking performance, nevertheless, the improvement gain of filter accuracy is limited, which can provide some references for engineering application.
Starting Page	139
Ending Page	145
Page Count	7
ISSN	10224653
Volume Number	25
e-ISSN	20755597
Issue Number	Issue 1, Jan (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/cje/25/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/cje.2016.01.021
Journal	Chinese Journal of Electronics
Publisher Date	2016-01-01
Access Restriction	Open
Rights Holder	© Chinese Institute of Electronics
Subject Keyword	Cholesky Factorization Covariance Analysis Doppler Radar Doppler Range Earth Centered Earth Fixed Coordinate System ECEF Coordinate System Error Covariances Filtering Method in Signal Processing Kalman Filter Local Coordinate System Monte Carlo Method Monte Carlo Test Moving Airborne Platform Position Measurement PseudoDoppler Measurement Radar Equipment SCMKF Sequential Converted Measurement Kalman Filter Sequential Filter Simplified Fixed Radar Slant Range Spatial Variables Measurement Statistics System And Application Time Varying Attitude Tracking Performance Unchanged Range Component
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering

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