23 May 2013 Advances in displaying uncertain estimates of multiple targets
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Both maximum likelihood estimation as well as minimum mean optimal subpattern assignment (MMOSPA) estimation have been shown to provide meaningful estimates in instances of target identity uncertainty when the number of targets present is known. Maximum likelihood measurement to track association (2D assignment) has been widely studied and is reviewed in this paper. However, it is widely believed that approximate MMOSPA estimation can not be performed in real time except when considering a very small number of targets. This paper demonstrates the MMOSPA estimator arises as a special case of a minimum mean Wasserstein metric estimator when the number of targets is unknown. Additionally, it is shown that approximate MMOSPA estimates can be calculated in microseconds to miliseconds without extensive optimization, making MMOSPA estimation a practicable alternative to more traditional estimators.
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David Frederic Crouse, David Frederic Crouse, "Advances in displaying uncertain estimates of multiple targets", Proc. SPIE 8745, Signal Processing, Sensor Fusion, and Target Recognition XXII, 874504 (23 May 2013); doi: 10.1117/12.2015147; https://doi.org/10.1117/12.2015147

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