Comparison Between Two Sensors and Multiple Sensors with TOA and TDOA/FDOA Fusions and Non-Fusions Under Noise Jitter Mitigation
Abstract
The prominence of geolocation technology and its demand has risen in recent years. Stringent and precise positioning is at the forefront of both civilian and military applications. The importance of precision leads to a rise in processing and algorithm run times. In addition, space, time and atmospheric conditions contribute to the complexity of geolocation operations. Past research measured time-of-arrival, time-difference-of-arrival, and frequency-difference-of arrival under stringent conditions using a synthetic aperture approach of two airborne sensors. While four sensors have been proven to be ideal in the geolocation of an emitter, we aim to decrease the requirement to three sensors and retain the purity of the original two sensor algorithm. Three-sensor fusion from multiple time-samples enhances the precision of the estimate and provides the end-user a better positioning solution. We propose the utilization of three airborne sensors collecting measurements from the synthetic aperture model. Sensor angular separation and aperture size are addressed. A thorough investigation into ionosphere mitigation is provided. Finally, an overall summary and comparison between two- and three-sensor approaches are documented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2014
- Accession Number
- AD1183748
Entities
People
- Richard G. Dobias
Organizations
- Naval Postgraduate School