运动的我
发表于 2025-3-26 22:41:30
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anthropologist
发表于 2025-3-27 03:58:51
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zonules
发表于 2025-3-27 06:03:13
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Junction
发表于 2025-3-27 13:29:09
Overview of GPS,Los Angeles Air Force Base (AFB). In 1973, the JP0 was directed by the U.S. Department of Defense (DoD) to establish, develop, test, acquire, and deploy a spaceborne positioning system. The present Navigation System with Timing and Ranging (NAVSTAR) Global Positioning System (GPS) is the result of this initial directive.
租约
发表于 2025-3-27 15:20:44
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过去分词
发表于 2025-3-27 20:41:06
Observables,d receiver generated signals. Unlike the terrestrial electronic distance measurements, GPS uses the “one way concept” where two clocks are used, namely one in the satellite and the other in the receiver. Thus, the ranges are biased by satellite and receiver clock errors and, consequently, they are denoted as pseudoranges.
moratorium
发表于 2025-3-27 23:44:55
Mathematical models for positioning,he satellite ., . (.) is the geometric distance between the satellite and the observing point, and . is the speed of light. The last item to be explained is △δ. (.) . This clock bias represents the combined clock offsets of the satellite and the receiver clock with respect to GPS time, cf. Eq. (6.1).
Obsessed
发表于 2025-3-28 05:30:41
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AMPLE
发表于 2025-3-28 09:40:55
https://doi.org/10.1007/978-3-642-94361-4The applications of GPS depend substantially on knowing the satellite orbits. For single receiver positioning, an orbital error is highly correlated with the positional error. In relative positioning, relative orbital errors are considered to be approximately equal to relative baseline errors.
Generic-Drug
发表于 2025-3-28 12:58:25
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