發(fā)布時間：2018-04-25 20:48

  本文選題：高程異常 + GPS高程擬合��； 參考：《昆明理工大學(xué)》2013年碩士論文

【摘要】：GPS導(dǎo)航定位以其應(yīng)用廣泛、操作簡便、多功能、高效率、全天候、高精度等特點(diǎn)著稱。用GPS信號可以進(jìn)行海、陸、空的導(dǎo)航,導(dǎo)彈的制導(dǎo),大地測量和工程測量的精密定位,時間的傳遞和速度的測量等。GPS系統(tǒng)由此展現(xiàn)了極其廣闊的應(yīng)用空間和應(yīng)用前景。 然而GPS在工程測量的應(yīng)用方面,高精度的GPS大地高卻不能直接應(yīng)用于實(shí)際生產(chǎn)使得GPS的三維定位優(yōu)勢不能得到充分發(fā)揮。因此,如何進(jìn)行高精度的GPS高程轉(zhuǎn)換成為了測繪學(xué)者們關(guān)注并致力于研究的熱點(diǎn)問題。 本文首先簡單概述了GPS的發(fā)展現(xiàn)狀和GPS高程轉(zhuǎn)換的研究現(xiàn)狀,介紹了與GPS高程擬合相關(guān)的概念,研究并總結(jié)了目前比較成熟的各種GPS高程擬合模型與方法。再以此為基礎(chǔ),引入三次樣條函數(shù)及其插值函數(shù)的定義和性質(zhì),構(gòu)建三次樣條高程異常函數(shù),建立新的線狀高程異常擬合模型；然后對“移去—恢復(fù)”擬合法進(jìn)行深入探討,將其本質(zhì)應(yīng)用于一般的單一擬合模型中,從而建立起混合擬合模型；并從權(quán)的定義和加權(quán)的意義出發(fā),將兩者與各種單一擬合模型相結(jié)合,建成GPS高程擬合的加權(quán)綜合模型；最后,用三個典型實(shí)例對所建立的模型加以驗(yàn)證,實(shí)例的計算結(jié)果證明所建立的模型可靠,擬合精度良好,這對GPS高程在工程中的實(shí)際應(yīng)用有著重大的意義。
[Abstract]:GPS navigation and positioning is famous for its wide application, simple operation, multifunction, high efficiency, all-weather, high precision and so on. GPS signal can be used for navigation of sea, land and air, missile guidance, precise positioning of geodetic and engineering survey, time transfer and velocity measurement. However, in the application of GPS in engineering survey, the high precision GPS geodetic height can not be directly applied to the actual production, which makes the advantage of 3D positioning of GPS not to be fully developed. Therefore, how to carry out high-precision GPS elevation conversion has become a hot issue that the surveying and mapping scholars pay attention to and devote themselves to. In this paper, the development status of GPS and the research status of GPS height conversion are briefly summarized, the concepts related to GPS height fitting are introduced, and various GPS height fitting models and methods are studied and summarized. On this basis, the definition and property of cubic spline function and its interpolation function are introduced, and the cubic spline height anomaly function is constructed, and a new linear height anomaly fitting model is established. The essence of the model is applied to the general single fitting model, and then the mixed fitting model is established, and the weighted synthesis model of GPS height fitting is built by combining the two models with each single fitting model from the meaning of the definition of weight and the weight of weight. Finally, three typical examples are used to verify the established model. The calculation results of the example show that the established model is reliable and the fitting accuracy is good, which is of great significance to the practical application of GPS elevation in engineering.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 李征航，，包滿泰，葉樂安;利用GPS測量和水準(zhǔn)測量精確確定局部地區(qū)的似大地水準(zhǔn)面[J];測繪通報;1994年06期

本文編號：1802906