Arbuzov P.A.

While solving some tasks of remote sensing, just for the identification of the angle fix of the objects when their images were received by iconic means, the photogrammetric models of that means are used. The parameters of a photogrammetric model, otherwise called the elements of outer orienting that define the projection of the center position in the outer coordinate system (X, Y, Z), and the angle position of a photo characterized by the proper angles (а, ?, ?), may be determined utilizing various methods. Using navigational parameters of flying recorded with on board instruments is considered to be the simplest method. The accuracy of defining flying parameters turns out to be sufficient to pilot flying aircraft, but does not allow one to solve successfully the purpose of fixing the site of the objects according to their images. We-ll were make more precisely that at present, owing to the development of high-precision satellite navigation, the projection center position is possible to be determined within part of a meter limit. But it is necessary to point out that the angle position of a photo is defined roughly enough (units of a degree). The situation becomes complicated when the apparatus is placed on board of a small or super small flying aircraft when it is impossible to place high-precision sensors on it. The method of identifying the elements of outer orienting of an image is suggested on the basis of using the satellite radio navigation system indices and digital terrain model. The essence of this method consists in searching the values of the outer orientation angles, providing the maximum meaning of quality that defines some degree of images matching, combined as a stereopair whose mutually corresponding elements are found by the help of the digital terrain model. The dependence of the accuracy for finding the angle fix of an image is shown from various types of instruments parameters and conditions of aerial surveillance carried out. Accuracy evaluations, obtained while modeling using real information, demonstrated an opportunity to satisfy the demands for the initial information to solve many tasks of targeting and search, and automatic control of flying aircraft too.