A New Method for Calibration of NLOS Error in Positioning Systems

Yangseok JEONG  Heungryeol YOU  Dae-Hee YOUN  Chungyong LEE  

IEICE TRANSACTIONS on Communications   Vol.E85-B   No.5   pp.1056-1058
Publication Date: 2002/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Sensing
NLOS error,  position location,  positioning system,  

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In positioning systems NLOS (Non-Line of Sight) errors always cause remarkable positive bias and directly increase range measurement errors. In this paper, a new method is proposed to calibrate NLOS errors in positioning systems by using the relationship between mean excess delay and delay spread measured at a mobile station. The computer simulations showed that the proposed calibration technique effectively reduces the positioning error caused by urban NLOS environment.