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：1992
卷号：XXIX Part B1
页码：278-277
出版社：Copernicus Publications
摘要：The National Land Survey of Sweden has lately begun aseries of attempts to use kinematic GPS navigation ofthe aircraft. A second step is to get coordinates of the photo stations. This paper describes the theoretical testsdone to investigate wh at results can be expected with GPS measurements combined with blockadjustment. Anexisting bundle adjustment program, GENTRI, is revised to inelude GPS observations. Simulated flight data isused to evaluate what effects different parameter accuracies, dif(erent ground control configurations and differentblock configurations will have on the result.When using only four ground control points, one in each corner of the block, combined with GPS measurementsthe height and plane precision in the new points will be very elose to what traditional blocktriangulationwithout GPS measurements can perform. Two crossing strips in each end of the block will give a higher precisionof the new points than two crossing height chains. If the precision in the GPS measurement can be maintainedwhen flying on higher heights it will have a positive effect on the result. When changing the block lengthor the block width no significant trends concerning the new points precision have been proved.GPS measurements can be used in combination with blocktriangulation and its advantage is mainly that it canreduce the amount of field work, both measuring points geodetically, targeting them and guarding them
