Title :
TCAS-aided multilateration for terminal surveillance with improved accuracy
Author_Institution :
Saab Sensis Corp., East Syracuse, NY, USA
Abstract :
In this paper, we propose a new Time Lag of Arrival (TLOA) aided position estimation algorithm for enhancing the existing Time Difference of Arrival (TDOA) based aircraft multilateration (MALT) concept. This method will yield better estimation accuracy in a passive manner with minimum cost increase, leveraging ambient Traffic Collision Avoidance System (TCAS) interrogation and reply messages. Conventional MLAT system is modified to receive on both 1030 MHz TCAS interrogation links as well as 1090 MHz transponder reply links to support the new algorithm. The results of a simulation study suggests that the proposed algorithm can significantly improve position estimation accuracy, and this performance can be achieved without adding new multilateration sensors.
Keywords :
air safety; aircraft communication; aircraft instrumentation; signal processing; surveillance; transponders; TCAS aided multilateration; aircraft multilateration concept; frequency 1030 MHz; frequency 1090 MHz; improved accuracy; interrogation links; multilateration sensor; position estimation algorithm; terminal surveillance; time difference of arrival; time lag of arrival; traffic collision avoidance system; transponder; Accuracy; Aircraft; Equations; Estimation; Measurement errors; Sensors; Surveillance;
Conference_Titel :
Digital Avionics Systems Conference (DASC), 2012 IEEE/AIAA 31st
Conference_Location :
Williamsburg, VA
Print_ISBN :
978-1-4673-1699-6
DOI :
10.1109/DASC.2012.6382364
