Comprehensive or integrated positioning, navigation and timing is an obvious developing trend following the global navigation satellite system.This paper summarizes the current status of micro-PNT and its developing requirements. The related key technologies are described and the relationship between comprehensive PNT and micro-PNT is analyzed. It is stressed that the comprehensive PNT needs massive infrastructure construction and investment, however, the micro-PNT aims at the integrated applications of high-tech micro sensors. It is different from the current opinions appeared in the literatures, micro-PNT should include multi GNSS integration and micro components of navigation and timing in order to make the PNT outputs refer to a unified coordinate datum and time scale. Micro-PNT focuses on the personalized micro terminal applications. Except for the miniaturization of each PNT component, micro-PNT aims at the deep integration of the micro sensors, adaptive data fusion and self calibration of each component.
YANG Yuanxi
,
LI Xiaoyan
. Micro-PNT and Comprehensive PNT[J]. Acta Geodaetica et Cartographica Sinica, 2017
, 46(10)
: 1249
-1254
.
DOI: 10.11947/j.AGCS.2017.20170249
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