Title :
An adaptative array processor using the analog L.M.S. algorithm: An efficient solution for a N.A.V.S.T.A.R./G.P.S. application
Author :
Milin, J.L. ; Terret, C. ; Diouris, J.F. ; Saillard, J.
Author_Institution :
L.A.M., URA CNRS, Rennes Univ., France
fDate :
June 28 1993-July 2 1993
Abstract :
A study has been performed to demonstrate the efficiency of adaptive signal processing for NAVSTAR/GPS (Global Positioning System) signal reception in a jamming ECM (electronic countermeasures) environment. The role of an adaptive antenna for such a system is to increase the signal to noise plus interference ratio (SNIR) to a power sufficient for most commercially available GPS receptors. The GPS signal reception power is about -160 dBm at the antennas. The analog LMS (least mean square) algorithm has been chosen for its highspeed/simplicity and lowcost trade-off. Test show good results: 64 dB SNIR enhancement in less than 300 /spl mu/s. Practical implementation of the LMS algorithm leads to experimental results that agree with the numerical simulation predictions.<>
Keywords :
Global Positioning System; adaptive antenna arrays; adaptive signal processing; array signal processing; jamming; least mean squares methods; Global Positioning System; NAVSTAR/GPS; adaptive antenna; adaptive signal processing; array processor; efficiency; electronic countermeasures; jamming; least mean square; numerical simulation; signal to noise plus interference ratio; Adaptive arrays; Adaptive signal processing; Electronic countermeasures; Global Positioning System; Jamming; Least squares approximation; Signal processing; Signal processing algorithms; Signal to noise ratio; Working environment noise;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385256
