10.14489/vkit.2016.02.pp.017-021 |
DOI: 10.14489/vkit.2016.02.pp.017-021 Обросов К. В., Лисицын В. М., Дронский С. А. Аннотация. Предложена методика оценки точности определения координат наземных объектов при использовании на борту летательного аппарата пассивной оптико-электронной системы переднего обзора. Определены предельные точности картографирования и построения эталона наземной сцены при малых высотах полета. Ключевые слова: оптико-электронные системы; стереофотограмметрия; аэрофотосъемка; триангуляция; цифровая модель местности.
Obrosov K. V., Lisitsyn V. M., Dronsky S. A. Abstract. In article are analyzed an objects coordinates and land scene model creation assessment accuracy at low-level flight and use of optical-electronic (thermovision, television or complex of thermovision + television) (OES) forward review systems, with which the majority of different craft types equipped now. Accuracy analysis is carried out for the case of triangulation method application, assuming the aircraft movement on some flight trajectory from a point A to point B, beginning from the moment of direction finding of objects in a point A at range S to a reference point on object O, located in the middle of the analyzed scene, and finishing in point B at the range R to object O. The minimum range R is defined from the requirement of simultaneous occurrence of all analyzed scene reference points in OES view. The maximum value of a γm angle between the straight line AB and the object O line of sight in point B is set. γm value is defined by capability of an aircraft speed vector change at the movement from a point A to point B and limit on the deviation angle modulo maximum of a view field from a longitudinal construction axis of aircraft. Are known: AB base measurements dispersions, view field rotation angles dispersions between AB line and a reference points line of sight deviation from a view field center. Dependences of land objects coordinates assessment accuracy from scene initial range S and the maximum angle γm are analyzed. The offered method allows estimating quantitatively the land objects coordinates assessment accuracy of triangulate method while direction finding using aircraft OES in two points on a flight trajectory. The carried-out analysis allows to make a conclusion on possibility of the bearing objects binding to a digital map with root mean square deviation of 1,8 m and of reference information making with root mean square deviation of 0,84 m with standard values of the OES parameters. It is shown that the angle increase to 110° between the second object line of sight and an aircraft movement vector while base forming, is an effective way of improvement a model scene creation accuracy and a binding of its image to a digital map. Keywords: Optical-electronic systems; Stereo photogrammetry; Aerial photography; Triangulation; Digital map.
РусК. В. Обросов, В. М. Лисицын, С. А. Дронский (ФГУП «Государственный научно-исследовательский институт авиационных систем» ГНЦ РФ, Москва) E-mail: lvm@gosniias.ru EngK. V. Obrosov, V. M. Lisitsyn, S. A. Dronsky (State Research Institute of Aviation Systems State Scientific Center of Russian Federation, Moscow) E-mail: lvm@gosniias.ru
Рус1. Формирование комплексированных телевизионно-тепловизионных изображений в системах передне-го обзора летательных аппаратов / В. В. Инсаров и др. // Вестник компьютерных и информационных технологий. 2013. № 4. С. 3 – 10. Eng1. Insarov W. V., Obrosov K. V., Kim V. Ia., Lisitsyn V.M. (2013). IR-TV images fusion in systems of the forward views of aircraft. Vestnik komp'iuternykh i informatsionnykh tekhnologii, (4), pp. 3-10.
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