Target Tracking with Multiple Data Sources.
Abstract
This report presents the results of a study on the impact of a'priori estimates of range and/or target speed on the bearings-only TMA problem. The method selected for this evaluation was a computer simulation of Maximum A'posteriori Probability (MAP) estimate which incorporates the a'priori statistical information in an asymptotically optimum manner. The a'priori 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 Depression/Elevation (D/E) 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 a'priori range information are algorithm dependent and primarily aid numerical convergence rather than solution accuracy. The use of a'priori range together with estimated D/E 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1979
- Accession Number
- ADA076559
Entities
People
- H. F. Jarvis
- N. B. Nill