Track Retrodiction for HFSWR

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Authors
  1. Ding, Z.
  2. Moo, P.
Corporate Authors
Defence Research and Development Canada, Ottawa Research Centre, Ottawa ON (CAN)
Abstract
In this paper, we explore the possibility of track retrodiction to improve the track performance when a radar’s track output rate can be reduced and delayed. In the case of High Frequency Surface Wave Radar (HFSWR), the output rate may be reduced to half an hour, instead of its regular update rate of about four minutes. This allows us to accumulate seven frames of data to optimize the track output. To make use of the extra multi-frame data, we borrow the Rauch-Tung-Striebel (RTS) algorithm for the track retrodiction purpose. Using a converted extended Kalman filter (CMEKF) as the baseline, its retrodicted version, namely the retrodicted CMEKF, shows a significant improvement in performance. Monte Carlo simulation is used to verify the effectiveness of this technique. Analysis shows that the position root mean squared error (RMSE) is reduced by 30% and the RMSE in velocity is reduced by 25% when seven frame retrodiction is used. Beyond 10 frames, the reduced RMSE becomes negligible, which means that future data beyond 10 frames does not significantly improve tracking performance.
Keywords
radar tracking;surface wave radar;track retrodiction
Report Number
DRDC-RDDC-2016-P053 — External Literature
Date of publication
14 Sep 2016
Number of Pages
6
DSTKIM No
CA043101
CANDIS No
804387
Format(s):
Electronic Document(PDF)

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