A Flight Test of the Strapdown Airborne Gravimeter SGA-WZ in Greenland

作者：Zhao, Lei; For**erg, Rene; Wu, Meiping^*; Olesen, Arne Vestergaard; Zhang, Kaidong; Cao, Juliang

来源：Sensors (Switzerland), 2015, 15(6): 13258-13269.

DOI：10.3390/s150613258

• gravity data
• strapdown airborne gravimeter
• inertial navigation system
• finite impulse response filter
• global positioning system

An airborne gravimeter is one of the most important tools for gravity data collection over large areas with mGal accuracy and a spatial resolution of several kilometers. In August 2012, a flight test was carried out to determine the feasibility and to assess the accuracy of the new Chinese SGA-WZ strapdown airborne gravimeter in Greenland, in an area with good gravity coverage from earlier marine and airborne surveys. An overview of this new system SGA-WZ is given, including system design, sensor performance and data processing. The processing of the SGA-WZ includes a 160 s length finite impulse response filter, corresponding to a spatial resolution of 6 km. For the primary repeated line, a mean r.m.s. deviation of the differences was less than 1.5 mGal, with the error estimate confirmed from ground truth data. This implies that the SGA-WZ could meet standard geophysical survey requirements at the 1 mGal level.

• 出版日期2015-6
• 单位中国人民解放军国防科学技术大学