Performance Issues Concerning Doppler-Only Localization of Submarine Targets
Abstract
Target localization can be achieved using only frequency information obtained from source-receiver platforms. The numerical method proposed achieves machine precision accuracy in computing target position and velocity from multiple simultaneous Doppler-shift measurements. The area over which localization can be performed depends very strongly on the configuration in which the sensors are placed, and the drop-off in performance is step-like. A negligible decrease in performance is encountered when switching from 'N-source, N-sensors' to a 'single-source, N-sensor' configuration. The number ot sensors to be used is an important criterion, and it is found that increasing this beyond 4 is only worthwhile with certain configurations. Uncertainties in the sensor locations decrease the area over which accuracy is acceptable; a 10 m uncertainty translates into a 5% loss in coverage. Noise in the Doppler information decreases accuracy gradually; one should expect an error 3 times greater with the addition of 10% noise.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2000
- Accession Number
- ADA389971
Entities
People
- I. Levesque
- J. Bondaryk
Organizations
- SACLANT ASW Research Centre