Document Type : Research Paper

Authors

• Abbas Ali Saleh Abadi ¹
• Hamid Sadeghi ²
• Hamed Sadeghi ³

¹ Faculty Member of the Surveying School

² Master's Degree; University of Science and Technology

³ Master of Remote Sensing

Abstract

One of the important issues in the field of surveying or military affairs is to determine the coordinates of the points on the earth, from which the distances, angles and other parameters of a point compared with the target or any other point can be measured, for which there are many methods including photogrammetry and land surveying, especially effective for short distances. But, due to lack of direct vision, these methods are not efficient enough for very long distances, such as thousands of kilometers between the continents. In this case, space and astronomical objects should be used because of the insignificance of the intercontinental distance compared to it, as well as the simultaneous view of the two stations and the space mass in a constant time. The present study describes the method of determining the location using the received waves from anonymous space objects.

Keywords

• quasar
• Doppler Shift
• telescope radio
• VLBI System