Nmda-Receptor 发表于 2025-3-25 06:50:02

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甜瓜 发表于 2025-3-25 09:51:06

High Accuracy Global Positioning System Orbit Determination: Progress and Prospectsational Block II satellites. The GPS constellation is designed to evenly distribute the satellites with circular orbits in three different planes at an altitude of about 20,000 km so that ground users can track typically six to eight GPS at any time from most locations.

草率男 发表于 2025-3-25 12:12:05

https://doi.org/10.1007/978-3-031-68865-2all to medium size (let us say from 5×5×2 km to 100×100×2 km). We assume that the surveys are performed with single- and dual-frequency receivers. We allow for different receiver types and we assume that at least some of the dual frequency instruments are of C/A-code type (recovering the L.-phase us

Migratory 发表于 2025-3-25 16:43:52

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不能约 发表于 2025-3-25 22:07:53

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olfction 发表于 2025-3-26 01:59:56

Samiha Ouda,Abd El-Hafeez Zohryudoranges, phase-pseudoranges. Generally speaking, the methods known so far contain advantages and disadvantages as well..Preprocessing methods are presented permitting cycle-slip detection in a two-step procedure. After setting-up a testing quantity its behaviour is checked with respect to smoothne

GLADE 发表于 2025-3-26 07:57:45

Alarm Visual Analytics and Applications,rement. The multipath environments are compared by computing the standard deviations from the pseudorange measurements over several hours. These have ranged from 1.3 m in a benign environment to 4.0 and 5.0 m in a highly reflective environment..This paper presents the results of several tests of pro

手段 发表于 2025-3-26 10:02:05

Intentional Stance Towards Humanoid Robotstic mode, constraints regarding the location of survey sites (urban surveys) may contaminate the carrier. Two short baselines (400 and 100 m) observed for one hour with the TRIMBLE microstrip antenna were selected to illustrate limitations resulting from multipath in an urban environment. Baseline c

拥挤前 发表于 2025-3-26 16:00:51

Martin Bracke,Hans-Stefan Sillerhquake prediction. A complete understanding of the crustal motion of a particular region requires a dense set of geodetic measurements in space and time. During the past decade, Global positioning System (GPS) at the United State National Geodetic Service has been developed chiefly for instantaneous

Ankylo- 发表于 2025-3-26 19:59:24

https://doi.org/10.1007/978-3-476-00795-7 were carried out. The practical experiences of these campaigns are reported. The overall experience of the receivers is that they are both reliable and easy to operate. The preliminary results for baselines with different lengths (long, medium and very short) are generally satisfactory, but signifi
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查看完整版本: Titlebook: Global Positioning System: An Overview; Symposium No. 102 Ed Yehuda Bock,Norman Leppard Conference proceedings 1990 Springer-Verlag New Yor