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Homotopy methods are an emerging approach to particle filtering that avoid numerical deficiencies of standard particle methods using a particle flow. This correspondence develops a new filter with nonthresholded measurements (i.e., a track-before-detect log-homotopy particle filter). We show the performance by simulating a rotating pulsed radar forming nonthresholded Range/Doppler maps.
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Kreucher et al. (2018) studied this question.
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