METHOD FOR PRODUCING THREE-DIMENSIONAL PICTURE SURFACE BASED ON BOARD pulse-Doppler radar low-altitude flight

摘要

method u043fu043eu043bu0443u0447u0435u043du0438u00a0 3d u0438u0437u043eu0431u0440u0430u0436u0435u043du0438u00a0 surface in the zone of the radar u043cu0430u043bu043eu0432u044bu0441u043eu0442u043du043eu0433u043e flight u0437u0430u043au043bu044eu0447u0430u044eu0449u0438u0439u0441u00a0 in establishing the regime u043fu043eu0441u0442u0440u043eu0447u043du043eu0433u043e review contro u043bu0438u0440u0443u0435u043cu043eu0433u043e station space, combined with the u0443u0437u043au043eu043fu043eu043bu043eu0441u043du043eu0439 doppler filtering u043fu0440u0438u043du00a0u0442u044bu0445 signals u043fu043eu0437u0432u043eu043bu00a0u044eu0449u0435u0439 to cut u0440u0430u0437u0440u0435u0448u0435u043du0438 spatial elements u00a0 antenna into smaller pieces (u0434u043eu043fu043bu0435u0440u043eu0432u0441u043au0438u0435 elements u0440u0430u0437u0440u0435u0448u0435u043du0438u00a0 - der)and the formation of a three-dimensional matrix u0438u0437u043eu0431u0440u0430u0436u0435u043du0438u00a0 surface as the sum of reflected signal amplitude of der, and by rapid al u0435u043au0442u0440u043eu043du043du043eu0433u043e u043fu0435u0440u0435u043au043bu044eu0447u0435u043du0438u00a0 beam radar cause beam bearing and corner place of line by line on the width directional pattern antenna in the review and for each k, l, m u043fu043eu043bu043eu0436u0435u043du0438 and the beam bearing and corner seats u0438u0437u043cu0435u0440u00a0u044eu0442 amplitude signal a (i,(j) at the exit of the j th filter doppler frequencies in the 1 - m element u0440u0430u0437u0440u0435u0448u0435u043du0438u00a0 range thus obtained on a set of values i, j a two-dimensional image of the surface of the Akl (i, j) (,) in the k, l of the beam radar, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, u0434u043bu00a0 each measured with the l - m position of beam amplitude Akl (i, j), exceeding the threshold (the u043eu0431u043du0430u0440u0443u0436u0435u043du0438u00a0 reflection from the surface), choose a (i, j,k - e elements u043fu0440u00a0u043cu043eu0443u0433u043eu043bu044cu043du043eu0439 sampling grid, which coordinates (xi, u0443j, zk belong to the k, l, i, j of der, and border area are in advance by u043eu043fu0440u0435u0434u0435u043b u0435u043du043du043eu0439 methodology, and remember the Akl (i, j) in the matrix of amplitudes a (i, j), a maximum value of the third coordinates zk (height) in the matrix z (i, j), then u043fu043eu0432u0442u043eu0440u00a0u044eu0442 these opera all of the u0434u043bu00a0 kl - x of the beam and thereby form a three-dimensional image of the surface in the zone of the review in the form of a two-dimensional matrix a (i, j) and z (i, j), then u043fu0440u0438u0432u00a0u0437u044bu0432u0430u044eu0442 matrix to the current u0434u0438u0441u043au0440u0435u0442u043du043eu043cu0443 point of time t: a (i, j), z (i, j) and transmit them consistently points = 0, 1, 2,...the algorithms of space-time processing u0434u043bu00a0 u043fu043eu0432u044bu0448u0435u043du0438u00a0 quality images and algorithms u0434u043bu00a0 output images on screen display for the pilot.