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Использование космических средств позиционирования при обработке аэрои космической информации

Использование космических средств позиционирования при обработке аэрои космической информации

Abstract

Photometric principles of measurements have found a wide recognition and a wide application in different fields of human activity. It is stipulated by the introduction of photogrammetric works of new technology for obtaining primary information about the locality. At present for obtaining high quality and highly exact airophotographic data digital wide format photographic cameras are used and photogrammetric processing of digital pictures is carried out at special digital photogrammetric work stations. A great importance is attached to photogrammetric methods during the monitoring of lands for information providing of state realty cadastre. At present land state monitoring is a modern technical trend to provide this cadastre with the necessary graphic and digital documents. Photographing of small territories (dacha settlements, agricultural buildings etc.), when the scale of airophotography is ten or more times less than the scale of map-making, is quite possible because the object can be photographed on two pictures that is to be located on one stereo pair. This article is devoted to photogrammetric processing of a single stereo pair. At this space facilities for positioning (GLONASS, GPS) secure the coordinates and altitudes of points of photographic. When space signals are properly synchronized with the work of the photograph camera shutter and careful determination of the elements of adjustment of space antenna to the relative centre of projection (s) of camera is carried out the coordinates of projection centres can be used as supporting geodetic points. Point realization of the above-mentioned terms allows to decrease the number of supporting points necessary for outside orientation of model to one. It should be located at the end of stereo pair opposite its middle. While designing redundant supporting points (for control and improvement of exactness) they should be located in the corners of stereo pair.

В статье рассмотрены теоретические основы и предложен алгоритм фотограмметрической обработки стереопары с привлечением в процесс вычислительных действий координат и высот точек фотографирования (центров проекций). Предполагается, что при выполнении аэрофотосъемки они зафиксированы системами ГЛОНАСС и GPS с надлежащей точностью. В основу алгоритма положена совместная реализация условий компланарности соответственных лучей стереопары и коллинеарности проектирующих лучей, проходящих через опорные геодезические точки. Полагая, что координаты точек фотографирования представлены в левой геодезической системе, исходные уравнения компланарности и коллинеарности приведены к виду, удобному для совместной фотограмметрической обработки плоских и пространственных координат соответственных точек стереопары. Совместная реализация условий компланарности и коллинеарности позволяет сократить необходимое для внешнего ориентирования модели число опорных точек до одной. Ее необходимо проектировать (закладывать, маркироать) на краю стереопары против ее середины

Keywords

ФОТОГРАММЕТРИЯ, СТЕРЕОПАРА, ОДИНОЧНАЯ МОДЕЛЬ, УСЛОВИЯ КОМПЛАНАРНОСТИ И КОЛЛИНЕАРНОСТИ, ЭЛЕМЕНТЫ ОРИЕНТИРОВАНИЯ, ТОЧКИ ФОТОГРАФИРОВАНИЯ, ГЛОНАСС, ТЕОРИЯ, АЛГОРИТМ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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