地形改正與地形直接影響的轉(zhuǎn)化關(guān)系
發(fā)布時間:2018-08-06 08:41
【摘要】:傳統(tǒng)的第三邊值問題的解算方法有Molodensky算法和Stokes-Helmert算法兩種。在Molodensky算法中使用的地形改正和Stokes-Helmert算法中使用的直接影響均由大地水準(zhǔn)面外地形產(chǎn)生,因而必然存在關(guān)系。本文通過推導(dǎo)給出了直接影響是地形改正、層間改正與壓縮地形影響3項之和的結(jié)論。在此基礎(chǔ)上,給出了直接影響的質(zhì)量線平面積分算法、質(zhì)量棱柱平面積分算法和地形改正的球面積分算法。此外本文還推導(dǎo)了布格球冠層間改正算法。通過實驗得出,直接影響的質(zhì)量線平面積分算法和質(zhì)量棱柱平面積分算法與傳統(tǒng)球面積分算法的差異分別為3.81和1.64 m Gal;地形改正球面積分算法與傳統(tǒng)質(zhì)量線、質(zhì)量棱柱平面積分的差異分別為3.92和1.69 m Gal。該結(jié)果說明,本文推導(dǎo)的直接影響與地形改正的關(guān)系式是正確有效且實用的。
[Abstract]:The traditional methods for solving third boundary value problems include the Molodensky algorithm and the Stokes-Helmert algorithm. The direct influence used in the terrain correction and the Stokes-Helmert algorithm used in the Molodensky algorithm is generated by the terrain outside the geoid, and therefore the relationship is inevitable. On this basis, the plane integral algorithm of the mass line, the plane integral algorithm of the mass prism and the spherical integral algorithm of the topographic correction are given on this basis. In addition, the interlayer correction algorithm of the Bouguer spherical crown is also derived. The plane integral of the quality line directly influenced by the experiment is obtained by the experiment. The difference between the algorithm and the quality prism plane integral algorithm and the traditional ball area algorithm is 3.81 and 1.64 m Gal respectively. The difference between the terrain correction ball area classification algorithm and the traditional quality line, the difference between the quality prism plane integral is 3.92 and 1.69 m Gal. respectively, and the results show that the relationship between the direct influence and the topographic correction is correct and effective, Economic.
【作者單位】: 信息工程大學(xué);地理信息工程國家重點實驗室;西安測繪研究所;陸軍航空兵學(xué)院;72515部隊;
【基金】:國家自然科學(xué)基金項目(41674025;41674082) 地理信息工程國家重點實驗室開放研究基金項目(SKLGIE2016-M-1-5)
【分類號】:P223.0
本文編號:2167165
[Abstract]:The traditional methods for solving third boundary value problems include the Molodensky algorithm and the Stokes-Helmert algorithm. The direct influence used in the terrain correction and the Stokes-Helmert algorithm used in the Molodensky algorithm is generated by the terrain outside the geoid, and therefore the relationship is inevitable. On this basis, the plane integral algorithm of the mass line, the plane integral algorithm of the mass prism and the spherical integral algorithm of the topographic correction are given on this basis. In addition, the interlayer correction algorithm of the Bouguer spherical crown is also derived. The plane integral of the quality line directly influenced by the experiment is obtained by the experiment. The difference between the algorithm and the quality prism plane integral algorithm and the traditional ball area algorithm is 3.81 and 1.64 m Gal respectively. The difference between the terrain correction ball area classification algorithm and the traditional quality line, the difference between the quality prism plane integral is 3.92 and 1.69 m Gal. respectively, and the results show that the relationship between the direct influence and the topographic correction is correct and effective, Economic.
【作者單位】: 信息工程大學(xué);地理信息工程國家重點實驗室;西安測繪研究所;陸軍航空兵學(xué)院;72515部隊;
【基金】:國家自然科學(xué)基金項目(41674025;41674082) 地理信息工程國家重點實驗室開放研究基金項目(SKLGIE2016-M-1-5)
【分類號】:P223.0
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