COMPARISON BETWEEN TWO SENSORS AND MULTIPLE SENSORS WITH TOA AND TDOA/FDOA FUSIONS AND NON-FUSIONS UNDER NOISE JITTER MITIGATION
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Authors
Dobias, Richard G.
Subjects
Satellite
Global Positioning System
Ionosphere
Noise
Synthetic Aperture
Unmanned Aerial Vehicle
Sensors
Time of Arrival
Time Difference of Arrival
Frequency Difference of Arrival
Jitter
Fusion
Global Positioning System
Ionosphere
Noise
Synthetic Aperture
Unmanned Aerial Vehicle
Sensors
Time of Arrival
Time Difference of Arrival
Frequency Difference of Arrival
Jitter
Fusion
Advisors
Su, Weilian
Date of Issue
2014-12
Date
December 2014
Publisher
Language
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.
Type
Thesis
Description
Series/Report No
Department
Electrical and Computer Engineering (ECE)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.