In this paper, theoretical analysis is made for the influence extent of the rise-and-fall flight on the GT aerial gravity measurement. In order to verify the measurement effect of the rise-and-fall flight, the authors carried out a series of tests on smooth rise-and-fall flight, and made evaluation on the results of aerial gravity smooth rise-and-fall flying measurement performed by GT-2A helicopter and fixed wing helicopter respectively. The results show that the adoption of smooth rise-and-fall flight under the condition of slope not in excess of 3.0° (rate-of-climb about 1/20) is feasible. The coincidence precisions of repeated measurements are exclusively less than 0.7 mGal, thus meeting the requirements of the high-precision measurement.
周锡华, 姜作喜, 屈进红, 王蓬. 起伏飞行在航空重力测量的应用研究[J]. 物探与化探, 2015, 39(S1): 98-104.
ZHOU Xi-Hua, JIANG Zuo-Xi, QU Jin-Hong, WANG Peng. The application of the rise-and-fall flight to the aerial gravity measurement. Geophysical and Geochemical Exploration, 2015, 39(S1): 98-104.
[1] Airborne GT-1A gravity survey for UTS Geophysics ACQUISITION AND PROCESSING REPORT Survey flown Jan. 2009.[2] Farr A, Meyer S, Bates M. Airborne gravity survey quesnellia region British Columbia[R]. 2008.[3] Airborne Petroleum Geophysics Heli-grav GT-1A/2A Drape Profile Example[R].[4] Baranyi E, Ellis R. An airborne gravity case study of the Podolsky eposit, Sudbury Basin, Airborne Gravity[R]. 2010.[5] Olson D, Eng P, Geoph P. Technical note: GT-2A Helicopter Repeat Line. Aurora Ontario[R].August,2009.[6] Baranyi E, Ellis R. An airborne gravity case study of the Podolsky eposit, Sudbury Basin, Airborne Gravity[R].2010.[7] Tuckett H. Technical note: GT-2A fixed-wing repeat line drape flights Vredefort Dome[R]. South Africa, 2009.[8] Epof Igor. Technical note: GT-2A helicopter drape flights[R]. Canada,2011.[9] Olson D. GT-1A and GT-2A airborne gravimeters: Improvements in design, operation, and processing from 2003 to 2010[C]//Airborne Gravity 2010 Workshop, ASEGPESA, Expanded Abstracts. 2010: 152-171.[10] Report of of the Gravity Survey for TIMMINS NORTHEAST, NORTHWEST AND SOUTH[R] .airborne gravity surveys. geophysics Data set 1051.[11] GJB 6561-2008,航空重力测量作业规范[S].2008.[12] 郭志宏,熊盛青,周坚鑫,等. 航空重力重复线测试数据质量评价方法研究[J].地球物理学报, 2008, 51(5):1538-1543.[13] 姜作喜,张虹,郭志宏. 航空重力测量内符合精度计算方法[J].物探与化探, 2010, 34(5):672-676.[14] 王静波,熊盛青,郭志宏,等.利用Kalman平滑技术估算航空重力测量中的载体垂直加速度[J].地球物理学进展,2010,25(3):968-974.[15] 熊盛青. 我国航空重磁勘探技术现状与发展趋势[J]. 地球物理学进展, 2009, 24(1):113-117.