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Proceedings Paper

Improved GMTI-tracking using road-maps and topographic information
Author(s): Martin Ulmke
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Paper Abstract

Tracking ground targets with airborne GMTI sensor measurements proves to be a challenging task due to high target density, high clutter, and low visibility. The exploitation of non-standard background information such as road maps and terrain information is therefore highly desirable for the enhancement of track quality and track continuity. The present paper presents a Bayesian approach to incorporate such information consistently. It is particularly suited to deal with winding roads and networks of roads. Key issues are: modeling the target dynamics in quasi one-dimensional road coordinates and mapping onto ground coordinates using linear road segments. The case of several, intersecting roads with different characteristics, such as mean curvature, slope, or visibility, is treated within an Interacting Multiple Model scheme. The iterative filter equations are formulated within a framework of Gaussian sum approximations on the one hand and a numerically exact Particle Filter approach on the other hand. Simulation results for single targets taken from a realistic ground scenario show strongly reduced target location errors compared to the case of neglecting road-map information. By using a realistic GMTI sensor model, early detection of stopping targets is demonstrated.

Paper Details

Date Published: 5 January 2004
PDF: 12 pages
Proc. SPIE 5204, Signal and Data Processing of Small Targets 2003, (5 January 2004); doi: 10.1117/12.502100
Show Author Affiliations
Martin Ulmke, FGAN-FKIE (Germany)


Published in SPIE Proceedings Vol. 5204:
Signal and Data Processing of Small Targets 2003
Oliver E. Drummond, Editor(s)

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