摘要
根据契比雪夫逼近理论 ,设计了适用于航空重力测量应用的有限冲激响应 (FIR)低通差分器 ,利用模拟模型对滤波器的性能进行了验证 .基于静态GPS试验数据和某地区机载动态GPS摄影定位的实测数据 ,应用FIR低通差分器计算了载体的垂直加速度 ,计算结果表明 ,当滤波时间间隔为 1 0 0s时 ,垂直加速度的确定精度可达± 1— 2mGal.
Using Chebyshev approximation method,we designed a FIR(finite impulse response)lowpass differentiator suit for airborne gravimetry application,and simulate a mathematical model to test the reliability of this filter.The vertical acceleration is determined using above mentioned filter based on the actual data from GPS stationary test and kinematic test for aerial potography.The results indicate that the accuracy of the acceleration derived from GPS height is about ±1—2mGal when the filtering period of 100 seconds is used.[
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期850-855,共6页
Chinese Journal of Geophysics
基金
国家攀登计划资助项目!( 970 2 31 0 0 3)
