CONCURRENT FLIGHT TEST OF LaCoste & Romberg(LCR) AIRBORNE GRAVIMETER ⅡAND Ⅰ SYSTEM
Sun Zhongmiao; Zhai Zhenhe; Li Yingchun ;and Xiao Yun
Xi’an Research Institute of Surveying and Mapping, Xi’an 710054
Abstract In order to validate the accuracy and the performance of the LaCoste & Romberg (LCRⅡ), a concurrent flight test over a mountain area was undertaken.The LCR gravimeter Ⅱ and an LCR gravimeter Ⅰ system side by side. The results of the flight test show that the standard deviation of the gravity anomalies difference measured with the two systems is about 4.0×10 -5 ms -2 namely the accuracy of the single system is about 2.8×10 -5 ms -2 if we assumed the two systems have the same accuracy. They also indicate that the standard deviation of the 5′×5′ grid mean gravity anomalies difference from the two systems is about 4.9×10 -5 ms -2 namely the related accuracy of the single system is about 3.5×10 -5 ms -2 and 2.9×10 -5 ms -2 after two outliers were eliminated. In general, LCR gravimeter Ⅱ system has the identical accuracy as the LCR gravimeter Ⅰ system, but it can be quickly leveling off.
Key words ：
airborne gravimetry
airborne gravimeter
gravity anomaly
lowpass filter
concurrent flight
Received: 01 January 1900
Corresponding Authors:
Sun Zhongmiao
Cite this article:
Sun Zhongmiao,Zhai Zhenhe,Li Yingchun et al. CONCURRENT FLIGHT TEST OF LaCoste & Romberg(LCR) AIRBORNE GRAVIMETER ⅡAND Ⅰ SYSTEM[J]. , 2012, 32(2): 24-27.
Sun Zhongmiao,Zhai Zhenhe,Li Yingchun et al. CONCURRENT FLIGHT TEST OF LaCoste & Romberg(LCR) AIRBORNE GRAVIMETER ⅡAND Ⅰ SYSTEM[J]. jgg, 2012, 32(2): 24-27.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I2/24
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