{"title":"纬度对直接UTM坐标变换结果的影响","authors":"M. Jassim, Darin Mohammed Tofiq Mohammed","doi":"10.14358/pers.22-00125r2","DOIUrl":null,"url":null,"abstract":"The transformation of global navigation satellite systems coordi- nates between any two datums represents a vital procedure. Although the geocentric coordinates (X, Y, Z) of two datums can be trans- formed using the 7-parameters method, the conversion of Universal Transverse Mercator\n (UTM) projected coordinates (E, N) between two systems cannot be applied with the same procedure. However, see Jassim (2022), which discusses a method that allows the transformation between any two datums using the utm projected coordinates directly regarding the variation of the datum's semi-major\n axis and the eccentricity. The results of the evaluation of this method show that there is a significant shift in the transformed coordinates due to the imperfection of the used algorithm. While this research suggests a modification in the previous algorithm by adding the latitude's variation\n as a third significant factor besides the other two variations (∂a, ∂e2, and Δ), the suggested modification gives a high decline in the uncertainty of the position values. Furthermore, it takes a homogenous fixed limit for different places over Iraqi territory.","PeriodicalId":211256,"journal":{"name":"Photogrammetric Engineering & Remote Sensing","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Latitude As a Significant Element on the Results of Direct UTM Coordinates Transformation Method\",\"authors\":\"M. Jassim, Darin Mohammed Tofiq Mohammed\",\"doi\":\"10.14358/pers.22-00125r2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The transformation of global navigation satellite systems coordi- nates between any two datums represents a vital procedure. Although the geocentric coordinates (X, Y, Z) of two datums can be trans- formed using the 7-parameters method, the conversion of Universal Transverse Mercator\\n (UTM) projected coordinates (E, N) between two systems cannot be applied with the same procedure. However, see Jassim (2022), which discusses a method that allows the transformation between any two datums using the utm projected coordinates directly regarding the variation of the datum's semi-major\\n axis and the eccentricity. The results of the evaluation of this method show that there is a significant shift in the transformed coordinates due to the imperfection of the used algorithm. While this research suggests a modification in the previous algorithm by adding the latitude's variation\\n as a third significant factor besides the other two variations (∂a, ∂e2, and Δ), the suggested modification gives a high decline in the uncertainty of the position values. Furthermore, it takes a homogenous fixed limit for different places over Iraqi territory.\",\"PeriodicalId\":211256,\"journal\":{\"name\":\"Photogrammetric Engineering & Remote Sensing\",\"volume\":\"39 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Photogrammetric Engineering & Remote Sensing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.14358/pers.22-00125r2\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photogrammetric Engineering & Remote Sensing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14358/pers.22-00125r2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
全球卫星导航系统坐标在任意两个基准之间的转换是一个至关重要的过程。虽然两个基准的地心坐标(X, Y, Z)可以用7参数法转换,但两个系统之间的通用横向墨卡托(Universal Transverse Mercator, UTM)投影坐标(E, N)的转换不能用同样的方法。但是,请参阅Jassim(2022),其中讨论了一种方法,该方法允许使用utm投影坐标直接根据基准的半长轴和偏心率的变化在任意两个基准之间进行转换。对该方法的评价结果表明,由于所用算法的不完善,变换后的坐标存在明显的偏移。虽然本研究建议在之前的算法中进行修改,通过添加纬度的变化作为除其他两个变化(∂a,∂e2和Δ)之外的第三个重要因素,建议的修改大大降低了位置值的不确定性。此外,它对伊拉克领土上的不同地方采取相同的固定界限。
Effect of Latitude As a Significant Element on the Results of Direct UTM Coordinates Transformation Method
The transformation of global navigation satellite systems coordi- nates between any two datums represents a vital procedure. Although the geocentric coordinates (X, Y, Z) of two datums can be trans- formed using the 7-parameters method, the conversion of Universal Transverse Mercator
(UTM) projected coordinates (E, N) between two systems cannot be applied with the same procedure. However, see Jassim (2022), which discusses a method that allows the transformation between any two datums using the utm projected coordinates directly regarding the variation of the datum's semi-major
axis and the eccentricity. The results of the evaluation of this method show that there is a significant shift in the transformed coordinates due to the imperfection of the used algorithm. While this research suggests a modification in the previous algorithm by adding the latitude's variation
as a third significant factor besides the other two variations (∂a, ∂e2, and Δ), the suggested modification gives a high decline in the uncertainty of the position values. Furthermore, it takes a homogenous fixed limit for different places over Iraqi territory.