Interference Benefits of a Vector Delay Lock Loop (VDLL) GPS Receiver

Don Benson

Abstract:	The interference benefits of a vector delay lock loop (VDLL) GPS receiver are compared by simulation over those of a conventional receiver as a first step before hardware implementation. Besides improvement to interference performance, other benefits to the user include: no additional hardware, no increase in power requirements, no increase in weight, and no decrease in reliability. In addition simulation results show a VDLL receiver can implement different filter bandwidths to accommodate differences that may be expected in vertical and horizontal motions. A conventional receiver can not do this. VDLL can be implemented as part of an ultratightly coupled or a deeply integrated GPS receiver so that if the inertial system degrades or fails, the receiver has the interference benefits of VDLL.
Published in:	Proceedings of the 63rd Annual Meeting of The Institute of Navigation (2007) April 23 - 25, 2007 Royal Sonesta Hotel Cambridge, MA
Pages:	749 - 756
Cite this article:	Benson, Don, "Interference Benefits of a Vector Delay Lock Loop (VDLL) GPS Receiver," Proceedings of the 63rd Annual Meeting of The Institute of Navigation (2007), Cambridge, MA, April 2007, pp. 749-756.
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