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.
Ensuring the safety of low‑altitude flight is one of the most important tasks of modern aviation. One of the possible ways to solve this problem is to estimate the terrain in an elevation plane. Processing radar signals in a monopulse mode of operation of radar with an elliptical‑shaped antenna system for solving problems of locating extended moving objects and an elevation estimate of the terrain in a maneuvering aircraft has several features, so one of the important tasks is to estimate the degree of signal distortion depending on from roll angle. In this regard, criteria have been developed, mathematical modeling and research have been carried out, which makes it possible to qualitatively and quantitatively assess the degree of influence of the angle of heel of an aircraft on the change in the radar signal, which makes it possible to develop algorithms for correcting the quadrature components of the radar signal.
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