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The Navigation and Occultation Experiment - GPS Receiver Performance On Board a LEO Satellite

Hauschild, André and Markgraf, Markus and Montenbruck, Oliver (2014) The Navigation and Occultation Experiment - GPS Receiver Performance On Board a LEO Satellite. Inside GNSS, pp. 48-57. Gibbons Media and Research, LLC. ISSN 1559-503X.

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The small satellite “Technologie-Erprobungs-Träger 1” (TET-1) is the first spacecraft developed for the German Aerospace Center (DLR) On-Orbit-Verification (OOV) program, which provides flight opportunities dedicated to testing and qualification of new technologies in space. The satellite was lifted into a low-Earth orbit (LEO) on July 22, 2012, from the launch site in Baikonur, Kazakhstan. TET-1 carries various technology demonstration payloads, among them the Navigation and Occultation eXperiment (NOX). This payload consists of a geodetic-grade GPS receiver, which is connected via an antenna selector to two GPS L1/L2 patch antennas. One of the antennas is mounted on the satellite’s zenith panel and receives signals primarily used for precise orbit determination (POD) experiments. The second antenna is pointed towards the anti-flight direction of the satellite for collecting measurements of low elevation satellites for ionospheric and tropospheric occultations. The antenna switch allows to select either the POD or the occultation antenna for signal reception. This article describes the NOX payload on board the TET satellite in detail and analyzes the receiver’s tracking performance and the accuracy of its navigation solution. It also presents the initial tracking results of the occultation antenna, which demonstrate that GPS signals can be tracked through the ionosphere below the satellite’s local horizon — at a minimum, even down to the upper part of the atmosphere — with commercial off-the-shelf (COTS) equipment.

Item URL in elib:https://elib.dlr.de/92117/
Document Type:Article
Title:The Navigation and Occultation Experiment - GPS Receiver Performance On Board a LEO Satellite
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:July 2014
Journal or Publication Title:Inside GNSS
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 48-57
Publisher:Gibbons Media and Research, LLC
Keywords:TET-1, NOX, GPS, dual-frequency receiver, navigation, LEO, small satellite, radio occultation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Space Flight Technology
Deposited By: Hauschild, André
Deposited On:20 Nov 2014 08:56
Last Modified:06 Sep 2019 15:26

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