A femto-satellite localization method based on TDOA and AOA using two CubeSats
Author
dc.contributor.author
Vidal Valladares, Matías Gabriel
Author
dc.contributor.author
Díaz Quezada, Marcos Andrés
Admission date
dc.date.accessioned
2022-12-13T14:57:43Z
Available date
dc.date.available
2022-12-13T14:57:43Z
Publication date
dc.date.issued
2022
Cita de ítem
dc.identifier.citation
Remote Sens. 2022, 14, 1101
es_ES
Identifier
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10.3390/rs14051101
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/189719
Abstract
dc.description.abstract
This article presents a feasibility analysis to remotely estimate the geo-location of a femto-satellite only using two station-CubeSats and the communication link between the femto-satellite and each CubeSat. The presented approach combines the Time Difference Of Arrival (TDOA) and Angle Of Arrival (AOA) methods. We present the motivation, the envisioned solution together with the constraints for reaching it, and the best potential sensitivity of the location precision for different (1) deployment scenarios of the femto-satellite, (2) precisions in the location of the CubeSats, and (3) precisions in each CubeSat's Attitude Determination and Control Systems (ADCS). We implemented a simulation tool to evaluate the average performance for different random scenarios in space. For the evaluated cases, we found that the Cramer-Rao Bound (CRB) for Gaussian noise over the small error region of the solution is highly dependent on the deployment direction, with differences in the location precision close to three orders of magnitude between the best and worst deployment directions. For the best deployment case, we also studied the best location estimation that might be achieved with the current Global Navigation Satellite System (GNSS) and ADCS commercially available for CubeSats. We found that the mean-square error (MSE) matrix of the proposed solution under the small error condition can attain the CRB for the simulated time, achieving a precision below 30 m when the femto-satellite is separated by around 800 m from the mother-CubeSat.
es_ES
Lenguage
dc.language.iso
en
es_ES
Publisher
dc.publisher
MDPI
es_ES
Type of license
dc.rights
Attribution-NonCommercial-NoDerivs 3.0 United States