全球导航卫星系统(global navigation satellite system, GNSS)⁃ 声学海底定位是面向海底俯冲
带板块形变监测需求提出的一种定位技术, 也是建设海洋时空基准网的一种重要技术 …

Global Navigation Satellite System–Acoustic ranging combined seafloor geodetic technique
(GNSS-A) has extended the geodetic observation network into the ocean. The key issue for …

Crustal deformation of the seafloor is difficult to observe solely using global navigation
satellite system (GNSS). The GNSS-acoustic (GNSS-A) technique was developed to …

Seafloor real-time positioning is important for the instantaneous detection of seafloor crustal
motion, seismic activities, hydrological rapid variations and rapid geodetic datum updates …

The variation of sound speed is a major factor affecting the accuracy of the acoustic
positioning underwater. A refined resilient model is constructed which includes temporal …

声速误差是GNSS-声学定位中的主要误差源, 制约了GNSS-声学位置服务的精度.
基于海洋时空基准网的思路, 本文研究了GNSS-声学位置服务中声速误差的修正方法. 首先 …

The ranges derived from acoustic measurements between seafloor stations are relatively
more accurate compared with those derived from the sea surface vessel transducer to the …

The Global Navigation Satellite System-Acoustic ranging combination technique (GNSS-A)
has enabled us to measure seafloor crustal deformation in the precision of centimeters …

It is important to consider horizontal heterogeneity in an underwater sound speed structure
to accurately estimate positions of GNSS-acoustic sites. Although large amounts of moving …

Measurement trajectory error, geometric error of the measurement trajectory, and systematic
error attributable to the velocity of sound are the main sources of the errors that affect the …