Title :
Finding user position location using the Doppler information in satellite CDMA systems
Author :
Kim, Soohong ; Chun, Joohwan
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
This paper presents a new method for determining the position of a ground mobile using synthetic aperture radar (SAR) signal processing techniques in the low Earth orbit (LEO) communication satellite. The received signal in the satellite contains the information on the Doppler frequency shift resulting from the relative motion between the satellite and a mobile transmitter over observation interval as measurements. The position of the ground mobile can be obtained by processing the history of Doppler frequencies coherently. Simulation results demonstrating the capability of the proposed position determination method in satellite CDMA communication links are presented
Keywords :
Doppler shift; code division multiple access; land mobile radio; multiuser channels; radar signal processing; radio direction-finding; satellite links; synthetic aperture radar; Doppler frequency history processing; Doppler frequency shift; Doppler information; LEO communication satellite; SAR signal processing; ground mobile location; low Earth orbit; mobile transmitter; observation interval; position determination method; received signal; satellite CDMA communication links; satellite CDMA systems; simulation results; synthetic aperture radar; user position location; Artificial satellites; Extraterrestrial measurements; Frequency measurement; History; Low earth orbit satellites; Motion measurement; Multiaccess communication; Radar signal processing; Synthetic aperture radar; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886797
