Iranian Scientists Manufacture Ground Based Synthetic Aperture Radar
“At present, this radar is undergoing laboratory testing in the form of student theses at the master's and doctoral level and it will be used in the real environment after checking its capabilities,” said Jalal Amini, a professor of the faculty of Mapping and Geospatial Information Engineering of the University of Tehran, who has succeeded in designing and making this radar with the help of graduate students of the University of Tehran.
“In microwave remote sensing, microwave bands of the electromagnetic spectrum are used, and among the capabilities of these waves is their permeability into ground, as well as the possibility of using them in any weather conditions and 24 hours a day while the optical remote sensing devices do not enjoy such capabilities,” he added.
Amini said that this type of ground radar sensor can be applied in detection of ancient monuments, the movements of existing bridges in urban areas, residential towers and subway stations, the auto-making industry to identify the amount of movement or deformation of each car part and even in medicine for assessing the heart rate and the amount of displacement and movement of the chest.
The GBSAR is a radar-based terrestrial remote sensing imaging system. It consists of a radar sensor that emits and receives a burst of microwaves, repeating this operation while the sensor is moving along a rail track. The imaging capability is achieved by exploiting the Synthetic Aperture Radar (SAR) technique.
The length of the rail determines the cross-range resolution of the acquired images; the longer the rail, the higher the cross-range resolution. The GBSAR is based on a coherent radar system, which measures not only the amplitude but also the phase of the received radar signal.
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