期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2004
卷号：XXXV Part B1
页码：495-500
出版社：Copernicus Publications
摘要：This paper is concerned with the influence of ground control points (GCPs) on the aerial triangulation of datasets acquired using a Leica ADS40. The ADS40 comprises seven parallel linear sensors in the focal plane of a single lens system. Three panchromatic sensors scan the same ground area at different angles to acquire forward, nadir and backward scenes. After the raw imagery and metadata are downloaded, determination of exterior orientation parameters and subsequent image rectification enable stereo viewing in three possible geometric combinations. Residual parallax in the rectified data, however, means bundle adjustment is necessary be- fore the maximum photogrammetric accuracy can be achieved. In order to assess the influence of bundle adjustment, a dataset of ADS40 imagery was acquired for an 8 x 8 km study area around Waldkirch in Switzerland. The dataset consists of four adjacent strips of ADS40 imagery plus two cross strips scanned by each of the sensor's seven channels. The ADS40 imagery of the study area was pre-processed, rectified and triangulated interactively using the ADS40 ground processing software GPro, the SOCET SET . photogrammetric software suite and the ORIMA bundle adjustment software. Repeated triangulation of the dataset in different con- figurations of strips, scenes and GCPs was applied. The number of GCPs was increased gradually in different arrangements to assess the influences on the triangulation process and analyse the need for GCPs when using GPS/IMU data. Based on the findings, rec- ommendations are made as to the most suitable block configuration to be selected when using data of this kind
关键词：Accuracy; ADS40; Aerial Triangulation; Bundle Adjustment; Digital Sensor; Precision
