Constellation Design for Regional Space-Borne Geolocation

Nadav Mailhot; Pini Gurfil

doi:10.2514/1.G005979

Constellation Design for Regional Space-Borne Geolocation

Nadav Mailhot, Pini Gurfil

Aerospace Engineering

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Time difference of arrival (TDOA)-based geolocation refers to position estimation of a terrestrial emitter by using at least three receivers. This type of geolocation is used by a variety of systems. Existing systems, however, do not provide continuous coverage of a given target area. In this study, satellite constellations that can provide continuous geolocation services in a specific target region are designed and optimized. The problem of TDOA-based geolocation is formulated, and the lower bounds of the estimation errors are expressed in the form of the Cramér–Rao lower bound, and the position dilution of precision (PDOP). Geolocation constellations in low Earth orbits are designed using global optimization techniques, aimed at minimizing the PDOP.

Original language	English
Pages (from-to)	795-814
Number of pages	20
Journal	Journal of Guidance, Control, and Dynamics
Volume	45
Issue number	5
DOIs	https://doi.org/10.2514/1.G005979
State	Published - May 2022

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Aerospace Engineering
Space and Planetary Science
Electrical and Electronic Engineering
Applied Mathematics

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10.2514/1.G005979

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title = "Constellation Design for Regional Space-Borne Geolocation",

abstract = "Time difference of arrival (TDOA)-based geolocation refers to position estimation of a terrestrial emitter by using at least three receivers. This type of geolocation is used by a variety of systems. Existing systems, however, do not provide continuous coverage of a given target area. In this study, satellite constellations that can provide continuous geolocation services in a specific target region are designed and optimized. The problem of TDOA-based geolocation is formulated, and the lower bounds of the estimation errors are expressed in the form of the Cram{\'e}r–Rao lower bound, and the position dilution of precision (PDOP). Geolocation constellations in low Earth orbits are designed using global optimization techniques, aimed at minimizing the PDOP.",

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AU - Gurfil, Pini

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AB - Time difference of arrival (TDOA)-based geolocation refers to position estimation of a terrestrial emitter by using at least three receivers. This type of geolocation is used by a variety of systems. Existing systems, however, do not provide continuous coverage of a given target area. In this study, satellite constellations that can provide continuous geolocation services in a specific target region are designed and optimized. The problem of TDOA-based geolocation is formulated, and the lower bounds of the estimation errors are expressed in the form of the Cramér–Rao lower bound, and the position dilution of precision (PDOP). Geolocation constellations in low Earth orbits are designed using global optimization techniques, aimed at minimizing the PDOP.

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JO - Journal of Guidance, Control, and Dynamics

JF - Journal of Guidance, Control, and Dynamics

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ER -

Constellation Design for Regional Space-Borne Geolocation

Abstract

All Science Journal Classification (ASJC) codes

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