Abstract
Aimed at space-based passive detection and tracking of ballistic targets, a multi-target multi-Bernoulli (MeMber) filtering algorithm based on a focal plane ambiguous measurement model is proposed. The measurement error sources of space-based passive detection are analyzed. It is found that focal plane target tracking is the basis of space target tracking in the framework of the distributed data processing structure, and the main error of focal plane measurement is pixel resolution. Based on the above analysis, the focal plane ambiguous measurement model is established to replace the traditional measurement model and the generalized likelihood function is designed. Finally, the MeMber filter is modified based on ambiguous measurement and generalized likelihood function. The simulation experiment compares the tracking effect of a MeMber filter based on ambiguous measurement and traditional measurement, respectively. The filter based on ambiguous measurement achieves better results. It shows that ambiguous measurement is closer to reality and has more application value.
Highlights
The space-based infrared detection system is becoming the best way to solve the problem of ballistic target early warning with the development of thermal imaging and tracking technology [1,2,3,4].It can track all the targets concerned and provide effective information support for defense systems, strategic counterattack, fire control and effect evaluation
Experiment experiments are designed to verify the effectiveness of the proposed ambiguous measurement multi-target multi-Bernoulli (MeMber) filter in space-based infrared focal plane target tracking
The following simulation experiments are designed to verify the effectiveness of the proposed compareambiguous with themeasurement effect of the measurement modeling method based on Reference [2], the model of MeMber filter in space-based infrared focal plane target tracking
Summary
The space-based infrared detection system is becoming the best way to solve the problem of ballistic target early warning with the development of thermal imaging and tracking technology [1,2,3,4]. In the background of high-orbit space-based detectors, the imaging size of long-range targets and their plume on the focal plane is no more than one pixel. This is the difficulty of target tracking in space-based infrared detection system. Different from the traditional measurement method, the ambiguous measurement is not a specific value containing noise,area but the approximate whereIn the target is located.
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