METHOD OF OBSERVATION OF SURFACE ON BASIS OF ONBOARD RADAR Russian patent published in 2005 - IPC

FIELD: radar systems working on basis of onboard radars in mode of real beam at electronic scanning.

SUBSTANCE: proposed method consists in forming matrix of radar image of surface in mode of real beam at electronic scanning at abrupt change-over (shift) of radar beam in azimuth by "n" part of directional pattern width and processing of amplitudes of reflected signals at each position of beam; amplitudes of reflected signals at output of radar total channel y₁, y₂…,y_n obtained at "n" first positions of radar beam in "i" range resolution element are summed-up with weights h₁, h₂,..,h_n and amplitude χ_n of reflected beam corresponding to "n" part of antenna directional pattern at first position of beam is estimated: besides that, during subsequent shifts of beam by "n" part of antenna directional pattern of amplitude of reflected signals obtained at subsequent positions of beam is summed-up with the same weights and parameters. χ_n+1, χ_n+2,…, χ_N;

Then, estimations A(_ij)= χ^_j of amplitudes χ_j(j=n, n+1,…,N) found independently in each "i" (i=1,2…,m) range resolution element are arranged in "m" lines and N-n+1 columns, thus forming matrix of radar image of surface .

EFFECT: increased resolving power (narrowing of antenna directivity) in azimuth at simultaneous widening of radar observation zone.