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# GNSS Based Relative Navigation for Intentional Approximation of Aircraft

Schielin, Emmanuel and Dautermann, Thomas (2014) GNSS Based Relative Navigation for Intentional Approximation of Aircraft. Aviation. ISSN 1648-7788. (Submitted)

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## Abstract

In aviation, satellite navigation is generally only used to determine the absolute position of aircraft. We show that the signals can also be used for safe relative navigation provided that a data link exists between the two aircraft. The link can be used to form a double difference combination of code phase measurements and determine a three dimensional baseline vector. The baseline vector is protected by protection levels which determine the $3\times10^-7$ error bound of the baseline estimation. Thus, the distance vector can be used to perform safe approximation maneuvers in instrument weather conditions. We derive the protection level expression and test the baseline vector estimation using data from two real satellite navigation receivers on the ground. Moreover, we simulate an intercept mission using a Spirent GNSS7790 simulator and show that with the derived protection bounds an approximation up to 10~m is possible.

Document Type:Article
Title:GNSS Based Relative Navigation for Intentional Approximation of Aircraft
Authors:
AuthorsInstitution or Email of Authors
Schielin, EmmanuelEcole Nationale de l’Aviation Civile
Dautermann, ThomasInstitute of Flight Guidance
Date:2014
Journal or Publication Title:Aviation
Refereed publication:No
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
ISSN:1648-7788
Status:Submitted
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Communication, Navigation and Surveillance
Location: Braunschweig , Oberpfaffenhofen
Institutes and Institutions:Institute of Flight Control
Institute of Flight Control > Pilot Assistance
Deposited By: Dr. Thomas Dautermann
Deposited On:11 Oct 2012 11:48