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Detection and Analysis for Synthetic Aperture Radar Image of Airport

A method of airport target detection and analysis of Synthetic Aperture Radar image is suggested in this article based on the facts. The airport detection processing steps are presented and the target shape analysis method is suggested. The airport target is automatically detected and the parameters of target are calculated. Experimental results show that the method is efficient . Introduction Synthetic Aperture Radar (SAR) is an imaging radar operating in microwave band. Because of its all-weather, all-day and penetrating ability to the surface, it makes up for the shortcomings of visible and infrared imaging. It has become the research object of universal attention and development in the world. With the continuous improvement of SAR image resolution, SAR has been widely used in geological exploration, ground monitoring, military reconnaissance and other fields. Target detection in SAR images has become a hot issue of general concern at home and abroad, and it has special significance for airport target detection and research from both military and civil. In this paper, computer automatic airport detection method based on SAR image is proposed to assist remote sensing image interpreters to complete the detection task. Characteristics of Airport Target Airport is a place for taking off, landing and parking of aircraft, usually composed of runway, taxiway, apron, command facilities, weather station and oil depot etc. There are terminal buildings in civil airports and barracks in military airports. Runway is the main object for airport detection as the most obvious feature of airport. The runway is a paving area with a certain length and width for aircraft takeoff, landing and taxiing. The runway is the main part of the flight area. It has a large area and regular shape. In SAR images, the reflected wave is weak because of the smooth surface of the runway, which is shown as a dark strip. It is easy to detect and recognize. The other targets are difficult to detect because of their small area and different shapes, as well as the limited resolution of SAR images. Fig. 1 is an airport SAR image with a resolution of 1 m. Figure 1. Airport SAR image. Flow Chart and Method of Airport Detection and Analysis The flow of airport detection and analysis in SAR images includes three stages: image preprocessing, target detection and target analysis. Fig. 2 shows the flow chart of Airport Detection and Analysis.