The Method Of Aerial Photography Detecting The Coordinate Of Missiles Column In The Sea Range

To the practical needs of wartime,it should to strengthen and seize all kinds of training or actual combat drills in the peacetime.The range is the place of completing this training and the corresponding assessment.The projectile spread accuracy data of Sea range is the important basis for testing the performance of ship artillery. The purpose of the study is to establish a set of automatic measurement system apply to detect the spread accuracy of sea range, give the coordinate formula and analyse the error.In the sea range place a target ship within the region, the camera is carried by vector , In the air, the camera take picture of location of target ship and missiles column stirred up by that rtillery shell enter into the water. Vector include helicopter, remote-controlled aircraft and hot air balloon, the focus is the measurement method of the camera carryde by helicopters and remote-controlled aircraft. When the camera carried by helicopter detect the situation of range,the helicopter hover in the range over the regional side. When the camera carried by remote-controlled aircraft detect the situation of range,the remote-controlled aircraft flight above the regional of range, the camera stabilization system place in the hanging warehouse of remote-controlled aircraft,maintain stability of the camera,so that the camera lens always perpendicular to the optical axis sea level.The image from the camera shooting transmited to the ground control centre by wireless image transmission system that placed in the vector,the switche of camera controlled by ground control center.The camera carried by helicopter is static in the time of taking picture of campaign target ship, The camera carried by remote-controlled aircraft is campaign in the time of taking picture of campaign target ship, because of the two different measuring system, the coordinates formula of footprint are different.Using Visual C + + software access to the mage pixel values of missiles column, then deduced the coordinates formula of footprint of that the camera carryde by helicopters and remote-controlled aircraft.Set a group of images about missiles column,using computer program calculat the spread accuracy of footprint based on the formula.Analysing the error of measurement System and the calculation formula.Using MATLAB software simulate and test the formula. The results show that the formula is correct, the institute established measurement systems can be used.