Using iterative method to realize the conversion of spacial rectangular coordinate to the geodetic coordinate,although the accuracy is higher,but the operation is complex and the efficiency is low.In order to improve the accuracy and operation efficiency of coordinate transformation,a new conversion method of spacial rectangular coordinate to the geodetic coordinate is put forward.The coordinate transformation is reahzed only with several intermediate variables,and the calculation process is simple,the result is accurate.The measured data of the satellite receiver is used to validate algorithm.Finally,by comparing with the iterative method,the accuracy assessment is carried out.The results show that the conversion accuracy of the method is higher two orders of magnitude than iterative method at latitude and longitude,and is higher 0.2 meters at height.%利用迭代法实现空间直角坐标向大地坐标的转换,虽然精度较高,但是运算复杂,效率低.为了提高坐标转换的精度和运算效率,提出了一种新的空间直角坐标到大地坐标的转换方法,仅仅引入了几个中间变量就实现了坐标的转换,计算过程简单并且结果精确.采用卫星接收机的实测数据进行算法验证,最后通过与迭代法比较进行了精度评定.结果表明,该方法对经纬度的转换精度比迭代法高出两个数量级,对高度的转换精度也高出0.2m左右.
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