Target Tracking with Multiple Data Sources.
ANALYSIS AND TECHNOLOGY INC NORTH STONINGTON CT
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This report presents the results of a study on the impact of apriori estimates of range andor target speed on the bearings-only TMA problem. The method selected for this evaluation was a computer simulation of Maximum Aposteriori Probability MAP estimate which incorporates the apriori statistical information in an asymptotically optimum manner. The apriori range information represents environmental predictions of likely range bands based on alternate propagation paths direct, 1st CZ, 2nd CZ, etc.. An additional phase of the study evaluated the use of DepressionElevation DE estimates from environmental predictions for resolving horizontal bearing from conical angle measurements. The results of the study indicate that the benefits achieved from the use of apriori range information are algorithm dependent and primarily aid numerical convergence rather than solution accuracy. The use of apriori range together with estimated DE does provide solution improvement for conical angle measurements from line arrays. The use of speed estimates improves both numerical convergence and solution quality during the initial TMA legs. Author
- Target Direction, Range and Position Finding