Smart Pseudolites Array System using Two-way Pseudolites

Taikjin Lee, Hyungmin So, Kangho Kim and Changdon Kee

Abstract:	The keys of this paper are to find the location of pseudolites and to eliminate the clock error of the pseudolites automatically. This paper proposed Smart Pseudolite Array System(SPAS), which contains self calibration of the pseudolite location and synchronization of the pseudolite clock. It is a little same as Self Calibrating Pseudolite Array(SCPA) of Stanford University. But SCPA was for a special user just like robot in mars, so user of SCPA system has transceiver not receiver. Our system is for public users, however, who have only GPS receiver not pseudolites or transceivers. Two-way pseudolite module contains pseudolite, receiver to get self or other signal and clock driving module to control the pseudolite’s clock. All algorithms of smart pseudolite array system is from two way ranging system. This two-way pseudolite is similar to transceiver but the two-way pseudolite has clock driving module to synchronize its clock so this is the difference between two-way pseudolite and transceiver. This system has a capability to calculate the location of pseudolites and synchronize their clock, automatically. Therefore, public user can use this pseudolite system without any additional equipments or efforts.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	1477 - 1483
Cite this article:	Lee, Taikjin, So, Hyungmin, Kim, Kangho, Kee, Changdon, "Smart Pseudolites Array System using Two-way Pseudolites," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 1477-1483.
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