AN ADAPTIVE, PASSIVE, UNDERWATER TRACKING AND TARGET LOCALIZATION SYSTEM,
Abstract
A target localization system utilizes a passive sonar tracking device to measure target relative bearing which is required for fire control. The parameters of the system depend on the ratio of power radiated from the target to noise power from other sources. Since this signal-to-noise ratio varies with time, the tracking system is describable by a linear differential equation with time-varying coefficients. The bearing data supplied to fire control is inherently contaminated with noise due to the method of processing raw data from the hydrophone array and due to transients which occur as signal-to-noise ratio changes. It is shown that improved fire control solutions result if each bearing is weighted by the inverse of the variance. A technique for computation of the variance of the bearings is developed. Implementation of the technique requires continuous measurement of the parameters of the tracking device. A computer for performing this measurement is discussed. Results of simulation studies are presented fr an adaptive target localization system which weights the bearing data as a function of computed variance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 19, 1964
- Accession Number
- AD0351237
Entities
People
- R. A. Abate
- T. L. Booth
- T. M. Downie
Organizations
- General Dynamics Electric Boat