METHOD FOR INCREASING RADIOLOCATION RESOLUTION, SYSTEM FOR REALIZATION OF METHOD AND METHOD FOR REMOTE DETECTION OF SMALL OBJECTS BY SYSTEM Russian patent published in 2005 - IPC

FIELD: technology for scanning minefields.

SUBSTANCE: method includes receiving reflected signals during appropriate analysis of surface, these signals are received using coherent radiolocation probing of portions of surface in observation sectors, determined by width of antenna direction diagram (10-50°) under observation angles within range ±75°, received signals are memorized in form of appropriate radio-images, after that for each observation angle radio-images are formed, appropriate for a set of signals of radio-images, received along sections, parallel to direction of appropriate analysis angle, in projections on a plane, perpendicular to these directions, and then Fourier transformation of formed projections of radio-images is performed, on basis of total of which for each portion by means of reconstructive computing tomography method, like Radon transformation, appropriate total quasi-hologram is formed with following restoration on its basis of two-dimensional reversed Fourier transformation of radio-image of appropriate portions with increased resolution. System for remote detection of small objects has radiolocation sensor, connected to computing device, by its output connected to indicator, synchronization block, block for forming radiolocation image, classification device, two memory blocks, coordinates determining block, synchronization block, printing transmitting and receiving devices, and also additional indicator and computing device. Method for remote detection of small objects by system, includes surveillance of substrate surface in zone of assumed location of small objects, for example, subject minefield, performed during aircraft reconnaissance of this field by its scanning with concurrent radiolocation probing, for example, in decimeter radio-wave range by means of onboard radiolocation station or radiolocation detectors of synthesized aperture, mounted onboard the aircraft, and also by means of step by step discontinuous rotation of antenna beam for given angles in each pre-selected elementary analysis range and determining coordinates of reflection spots of appropriate signals during each step of rotation of radiolocation station antenna beam in these analysis ranges, while reflected signals and coordinates of appropriate sections received during probing of substrate surface are memorized, and ten signals of radio-imaging of sections are formed, appropriate for these reflected signals, and coordinates of surveyed field appropriate for them.

EFFECT: possible non-contact search with high probability of detection and recognition of small objects, like mines, including those buried in soil and appropriately concealed.

3 cl, 7 dwg