<title>Analysis coherent signal processing methods in synthetic aperture radar on small-scale viewing angles under voluntary movement aircraft</title>

Abstract

In the article realize analysis the coherent processing method which uses to form synthetic aperture antenna on a board of aircraft. The factors, which send for distortion radar image on small-scale viewing angle during high-intensity maneuvering velocity shown for considering method of synthesizing aperture antenna. A synthetic aperture antenna software model was designing and analyzing. Some results of research ofthe coherent processing methods for receiving earth's imagery are shown.Keyword list Synthetic aperture antenna, coherent processing method, finer resolution, radar image, reflected signal, high-intensity maneuvering velocity, small-scale viewing angle.For airborne ground-mapping radar there has been continuous pressure and desire to achieve finer resolution. initially, this finer resolution was achieved by the application of "brute-force" techniques. Conventional radar system of this type was designed to achieve range resolution by the radiation of a short pulse and azimuth resolution by the radiation of a narrow beam (Fig. 1). In order to increase azimuth resolution widely applied plane's radar station with a synthetic aperture antenna.Synthetic aperture radar (SAR) is based on the generation of an effective long antenna on the flying path by signal-processing means rather than by the actual use of a long physical antenna (Fig. 2). In fact, physical antenna has a broad radiation pattern and relatively small at the same time [1].Aircraft radar Figure 1. Tradition approach to achieve range resolution ABSTRACT In the article realize analysis the coherent processing method which uses to form synthetic aperture antenna on a board of aircraft. The factors, which send for distortion radar image on small-scale viewing angle during high-intensity maneuvering velocity shown for considering method of synthesizing aperture antenna. A synthetic aperture antenna software model was designing and analyzing. Some results of research ofthe coherent processing methods for receiving earth's imagery are shown.