Development of Comprehensive PNT and Resilient PNT

doi:10.11947/j.JGGS.2023.0301

Abstract

Abstract:

Any single Positioning, Navigation and Timing (PNT) technology has its vulnerability and limits, even the powerful Global Navigation Satellite System (GNSS) is no exception. To provide continuous and reliable PNT information to users, the theory and technique of comprehensive PNT information system and resilient PNT application system have attracted great attention from Chinese scholars. We try to summarize the progress and development of the synthetic PNT system, including the proposal, the modification and the improvement of the comprehensive PNT, as well as the follow-up resilient PNT. The frame of China’s comprehensive PNT system consisted of comprehensive PNT infrastructure and comprehensive PNT application system is initially described; the achievements on some main PNT technologies are introduced; the conceptual models of resilient PNT are given; besides, existing researches on resilient function models and stochastic models are summarized according to different user scenarios.

Key words: GNSS; comprehensive PNT; resilient PNT; resilient function model; resilient stochastic model

Xia REN, Yuanxi YANG. Development of Comprehensive PNT and Resilient PNT[J]. Journal of Geodesy and Geoinformation Science, 2023, 6(3): 1-8.

Figures/Tables 2

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Signal accuracy	SISRE/m			Orbit/m					Clock/ns				BDGIM/m
	B1I /B3I			IGSO		MEO			IGSO		MEO		Day	Night
	1.13			1.81		1.24			2.13		1.78		0.89	0.59
System perfor- mance	Positioning/m												Timing /ns	PDOP availability
	B1I		B3I				B1C			B2a
	H	V	H		V		H	V		H		V
	3.50	5.45	4.66		7.04		2.99	4.22		4.06		7.28	13.01	100%