APPLICATION OF PARALLEL ALGORITHMS BASED ON OpenMP TO SATELLITE GRAVITY FIELD RECOVERY
Zhou Hao 1) ;Zhong Bo 1,2) ;Luo Zhicai 1,2) ; and Zhang Kun 1)
1)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300792)Key Lab. of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079
Abstract The massive satellite data presents a significant computational challenge to estimate the gravity field. Analyzing the computingintensive tasks in recovering the earth gravity field model based on the direct least-squares algorithms, on applying parallel computing techniques capable of rigorously inverting geopotential coefficients using direct method on the basis of OpenMP is focused. Eventually, the earth’s gravity fields complete to degree and order 60 are recovered respectively on the basis of monthly along track disturbing potential observations and gravity gradient observations (with 5 s sampling interval). The simulation shows that introducing the parallel algorithms based on OpenMP into determination of the earth’s gravity field model can be more effective, and is of great reliability.
Zhou Hao ,Zhong Bo,Luo Zhicai et al. APPLICATION OF PARALLEL ALGORITHMS BASED ON OpenMP TO SATELLITE GRAVITY FIELD RECOVERY[J]. , 2011, 31(5): 123-127.
Zhou Hao ,Zhong Bo,Luo Zhicai et al. APPLICATION OF PARALLEL ALGORITHMS BASED ON OpenMP TO SATELLITE GRAVITY FIELD RECOVERY[J]. jgg, 2011, 31(5): 123-127.
