Improving Trajectory Predictions for Short Baseline Line-of-Bearing Tracking Systems 9781423572800

Improving Trajectory Predictions for Short Baseline Line-of-Bearing Tracking Systems

ISBN-10: 1423572807
ISBN-13: 9781423572800
AUTHOR:
PUBLISHER: Storming Media
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Note: Not guaranteed to come with supplemental materials (access codes, CDs, DVDs)
Product Description: This report investigates methods for analyzing and improving the tracking performance of short baseline line-of-bearing (LOB) systems. Such a system might be placed on an armored vehicle in order to track an incoming threat projectile and make an accurate prediction of the threat's future location (at a specific time) so that an appropne reaction can he initiated. The processes for estimating the trajectory of a projectile over the terminal portion of its ffight are discussed. LOB, range, and radial speed sensor information were considered. Three statistical estimation methods for predicting a target's trajectory are discussed: recursive least squares, weighted least squares, and Kalman filter estimation. Simulation were performed for six sensor/ estimator configurations for five attack azimuths and two intercept ranges. It is the inherent geometry of a short-baseline LOB system leads to large errors in the system's ability to determine range, whereas the determination of cross- range is less affected by the geometry. Simulation results are presented for all sensor/estimator combinations, and the relative improvements of each are discussed. One result shows that range sensors can greatly improve the performance of inherently bad LOB sensors but that care must be taken in properly formulating the LOB/range sensor estimation routines so as not to bias the results. Another result shows that it is important to allow the incoming threat projectile to approach as close as is feasible to improve the quality of the LOB observations and thus the overall estimation.

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PUBLICATION DATE:
PAGES: 112
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