红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2015年
4期
1254-1259
,共6页
数字天顶仪%定位方法%定位效率%定位精度
數字天頂儀%定位方法%定位效率%定位精度
수자천정의%정위방법%정위효솔%정위정도
digital zenith camera%positioning method%positioning efficiency%positioning accuracy
针对数字天顶仪原有方法计算过程复杂和计算过程中存在误差的问题，通过改变时间补偿方式和优化迭代核心，提出了一种改进的数字天顶仪定位方法。该方法在切平面中进行均值过程，消除了原方法运算中引入的误差，也避免了切平面变换和反变换的反复计算，从而大幅简化了计算流程。通过实验比较了传统方法与改进方法的计算效率和精度，结果表明：改进方法的计算效率比原方法提高了至少6倍；改进方法赤纬的计算精度比原来的15米左右提高了约1.05 m。因此，改进方法能够在一定程度上提高定位的精度。
針對數字天頂儀原有方法計算過程複雜和計算過程中存在誤差的問題，通過改變時間補償方式和優化迭代覈心，提齣瞭一種改進的數字天頂儀定位方法。該方法在切平麵中進行均值過程，消除瞭原方法運算中引入的誤差，也避免瞭切平麵變換和反變換的反複計算，從而大幅簡化瞭計算流程。通過實驗比較瞭傳統方法與改進方法的計算效率和精度，結果錶明：改進方法的計算效率比原方法提高瞭至少6倍；改進方法赤緯的計算精度比原來的15米左右提高瞭約1.05 m。因此，改進方法能夠在一定程度上提高定位的精度。
침대수자천정의원유방법계산과정복잡화계산과정중존재오차적문제，통과개변시간보상방식화우화질대핵심，제출료일충개진적수자천정의정위방법。해방법재절평면중진행균치과정，소제료원방법운산중인입적오차，야피면료절평면변환화반변환적반복계산，종이대폭간화료계산류정。통과실험비교료전통방법여개진방법적계산효솔화정도，결과표명：개진방법적계산효솔비원방법제고료지소6배；개진방법적위적계산정도비원래적15미좌우제고료약1.05 m。인차，개진방법능구재일정정도상제고정위적정도。
The original positioning method for digital zenith camera has the problems that its calculation process is complicated and during the process some errors are introduced. By changing the way of time compensation and optimizing the iteration core, an improved positioning method was proposed. The mean in tangent plane is calculated by this method, so it can eliminate the errors in original method. Besides, by this method, the positioning process can also be simplified by avoiding the repeated calculation of tangent transformation and inverse tangent transformation. The efficiency and accuracy of these two methods were compared through experiments. The result shows that, the efficiency of improved method is more than 6 times higher than the original one; the declination calculated by improved method is 1.05 m more accurate than the original 15 m. Therefore, compared with the original method, the positioning accuracy is improved with the improved method.
