CAJ | 학술논문

基于“移去-恢复”原理，借助GPS天文水准理论，本文提出了一种GPS高程传递方法。首先，通过重力场模型移去高程异常中的低频部分，得到似大地水准面的残余面；其次，通过二次曲面拟合，获取似大地水准面的残余面形状和夹角偏差，并计算基准高程点和观测点间剩余高程异常差；最后，获取两点间正常高差。试验表明，该方法可获得三等水准测量的高程传递精度，对长距离高程传递，如跨河、跨海高程传递具有借鉴作用。
기우“이거-회복”원리，차조GPS천문수준이론，본문제출료일충GPS고정전체방법。수선，통과중력장모형이거고정이상중적저빈부분，득도사대지수준면적잔여면；기차，통과이차곡면의합，획취사대지수준면적잔여면형상화협각편차，병계산기준고정점화관측점간잉여고정이상차；최후，획취량점간정상고차。시험표명，해방법가획득삼등수준측량적고정전체정도，대장거리고정전체，여과하、과해고정전체구유차감작용。
Based on the “remove-restore” principle , with the aid of GPS astronomical leveling theory , this paper proposed a method to transfer the height .By the means of gravity field model ,the low-frequency part of anomaly can be removed ,and a residual surface of Geoid can be obtained .With the quadratic surface fitting ,we can obtain the Geoid re-sidual surface shape and the angle deviation ,and calculate the residual anomaly difference between the datum points and observation points.Finally,to get the normal height difference between the datum points and observation points ,based on the same height datum .In this paper ,a real tests is given ,and showed that the method close to the accuracy of the third order Leveling .Meanwhile ,long distance height transfer , such as across the river , across the sea elevation transfer has some reference value .