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摘要

全文摘要次数: 3163 全文下载次数: 16
引用本文:

DOI:

10.11834/jrs.20000104

收稿日期:

1998-09-09

修改日期:

1998-11-12

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适用于机载三维遥感的动态GPS定位技术及其数据处理
中国科学院遥感应用研究所,北京100101
摘要:

机载三维遥感采用动态GPS定位技术提供遥感器的空中精确位置,能快速高效获得遥感地学编码图像和DEM,该文对中国自行研制、具有独创性的机载三维遥感影像制图系统中的动态GPS定位技术特点和要求进行了分析。

Kinematic GPS Positioning Technique and Data Processing Used in Airborne 3D Remote Sensing System
Abstract:

s: Airborne laser image and mapping system (ALIMS)which integrates kinematic GPS positioning system, laser range finder, attitude measurement unit and optical mechanical scanner into a rigid platform can generate DEM (digital elevation model)and geo referenced image rapidly and efficiently. We regard ALIMS as a 3D remote sensing system, because it can directly obtain 3D position together with spectral information. Kinematic GPS is a key sensor that is able to give the precise 3D position of the platform. In this paper we present the kinematic GPS technology and data processing techniques. First, we analyses the GPS technical requirement which can suit for ALIMS. For example, why do we need high differential GPS positioning technique, how to synchronize GPS data with remote sensing data, and why collecting high rate GPS data is important. Then, we discuss the GPS data processing procedure, including differential GPS processing, solution of pulse’s position, datum transformation, coordinate project and eccentric correction. In several airborne experiments we have applied kinematic GPS positioning technology and corresponded data processing, and the result is satisfactory.

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