Michael Mertens

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For the detection of targets moving on ground, airborne ground moving target indicator (GMTI) radar is well-suited. In the tracking process, complex target dynamics, particularly stop and go maneuvers, and target masking due to Doppler blindness, often lead to track losses. By means of a refined sensor model it is possible to detect and handle such diverse(More)
In this contribution the problem of tracking convoys moving on the ground by means of airborne radar is discussed. A coherent radar with multi-channel array antenna is considered which makes clutter suppression by space-time adaptive processing (STAP) techniques possible. In addition, a technique to estimate the lateral length component of a convoy is used(More)
This study focuses on tracking targets by airborne ground moving target indication (GMTI) radar in a medium pulse repetition frequency (MPRF) mode, in which both Doppler as well as range ambiguities occur. The standard radar operation is to resolve these ambiguities at the signal processing level by using several PRF. This approach, however, consumes radar(More)
In ground target tracking based on kinematic measurements by airborne radar, several challenges in general strongly deteriorate the performance of any standard tracking filter. The major challenges are imprecise measurements and missed detections, a strong false alarm background, closely-spaced targets, technical and terrain obscuration, and complex target(More)
The knowledge on the radar cross section (RCS) of a ground target can support classification and identification tasks. In addition, it might also contribute to the resource management of the radar system because in general less energy needs to be emitted towards larger targets in order to obtain a detectable target return compared to small targets. The(More)
Signal strength information is a standard output of a modern radar system. Provided the amplitude of the target returns exceeds the false alarm background, the consideration of signal strength may lead to improved target estimates, depending on the scenario. In this paper a Bayesian tracking algorithm is presented which incorporates the signal strength(More)
This paper investigates the Doppler blind zone of bistatic transmitter and receiver configurations and its impact on the tracking of ground targets based on measurements from airborne ground moving target indication (GMTI) radar. The Doppler blind zone arises from the clutter cancellation by space-time adaptive processing (STAP). In general, this poses a(More)
Trackers for Ground Moving Target Indicator (GMTI) radar have to be benchmarked in order to yield good results. For many benchmarking purposes, the usage of real data may become expensive and in-feasible. It may also lack of knowledge of the ground truth. Simulating GMTI situations is a less-expensive alternative to real measurements. In order to get a(More)
This contribution deals with tracking of convoys moving on ground by airborne GMTI radar. A technique based on generalized power estimators using multiple beams is used to estimate the lateral length component of an unresolved convoy. In combination with the conventional range measurement, the full length information can be obtained in case of a linear(More)