Title :
On GPS signal multipath modeling in dynamic environments
Author_Institution :
Nedics Assoc., Irvine, CA
Abstract :
This paper examines multi-path propagation modeling in moderate and highly dynamic multi-path environments. An enhanced multipath model is proposed with emphasis on conversion from the multi-path Doppler shifts into their code delay shifts. Analytical derivation of the conversion mechanism is related to two simplified scenarios of aligned transmitter, reflector and receiver. The model is further applied to a set of processed IF samples to try to explain peculiarities of some of urban environment measurements, and of partially unresolved urban-canyon and aviation landing measurements performed by others.
Keywords :
Doppler effect; Global Positioning System; avionics; multipath channels; radio receivers; radio transmitters; GPS signal multipath modeling; aligned transmitter; aviation landing measurements; code delay shifts; dynamic environments; multipath Doppler shifts; multipath propagation; radio receiver; urban environment measurements; urban-canyon; Delay; Doppler shift; Frequency; Global Positioning System; Narrowband; Optical propagation; Performance evaluation; Tracking loops; Transmitters; Vehicle dynamics;
Conference_Titel :
Aerospace conference, 2009 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
978-1-4244-2621-8
Electronic_ISBN :
978-1-4244-2622-5
DOI :
10.1109/AERO.2009.4839415
