Dr. Stephane E. Gattein Profile

Dr. Stephane E. Gattein

at Airbus Defence and Space

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Proceedings Article | 28 March 2005 Paper

Prior knowledge integration about road-dependent ground target behavior for improving tracking reliability

Stephane Gattein, Patrick Vannoorenberghe, Marc Contat

Proceedings Volume 5813, (2005) https://doi.org/10.1117/12.603611

KEYWORDS: Roads, Kinematics, Detection and tracking algorithms, Sensors, Reliability, Radar, Target detection, Data modeling, Data integration, Modeling

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This paper describes an algorithm for tracking ground targets, mainly based on measurements from a MTI radar. We examine the use of prior knowledge on target type for automatically improving the performance of a purely kinematic tracker. This tracker is an adaptation from a Variable Structure Interacting Multiple Model (VS-IMM) estimator acting within an S-Dimensional Assignment method. The algorithm can thus track several targets with false alarms, and the variable structure allows to use only the relevant dynamic models relative to roads in the vicinity of the target's prediction. However the set of possible on-road and off-road models do not interact as in the usual IMM mechanism. Instead the on-road behaviour of a target across S-1 radar scans is optimally managed in a hypothesis tree, since we do not mix incompatible road models. However, both global on-road and off-road behaviours are handled by mode transition probabilities, making it possible to track targets that change their behaviour regarding the road network with the same algorithm. Next an automatic measured type data integration scheme is examined, that can be connected to the above kinematic framework. The incoming measured type data is modelled by a belief function to reflect uncertainty, as well as the sensor's reliability. Simulation results show the operation of the kinematic tracker for road targets, illustrating the relevance of the variable structure dynamic model set.

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