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At creation microwave scanning radiometric systems intended for remote sensing of environment from flight vehicles (airplane, satellite), one of the main problem is achievement a compromise between requirements of fulfilling the greatest possible spatial resolution, broad field of view and extremely accessible radiometric sensitivity and absolute accuracy for measured brightness temperature. The contradictions are provoked by time limitations imposed on measurement cycle duration for one pixel of radiometric image at high speed of the carrier, -the higher spatial resolution and wider field of view, the more amount of independent elements (points) in formed image and the less time may be appointed on data estimation for one element. Besides this, a way of scanning may impose limitations upon marginal speed of motion of the antenna beam. In the case of using antennas with full moving aperture, significant mechanical moments may appear at large rates of scanning, which make lower the greatest speed of motion of the antenna and will increase weight and power consumption of mechanical drive. These problems stimulates researches at such areas of microwave radiometric systems design as utilization non-mechanical ways of antenna beam control jointly with rising operating frequencies to short-wave part of centimeter range and to millimeter range of radio waves, -it's possible to realize high antenna directivity under rather small sizes of receiving aperture at these bands and, at the consequence of that, high speeds of spatial motion of antenna beam may be ensured. However, the contradictions related with providing the highest radiometric sensitivity in these wavebands become more significant, because of monotonous deterioration of noise parameters of active receiving modules and passive microwave elements with increasing of frequency.To resolve considered problems possible way is application of non-traditional means of antenna beam spatial position control llkewise radiothermal images formation with assistance of multi-beam systems.As an example of mapping microwave radiometric system with non-mechanical antenna beam control, the RM-08 scanning radiometric system developed in IRE NASU for space satellites ((Kosmos)), ((Ocean-01)) series may be submitted [ 11. This system has passed truth operational tests at the composition of radiophysical insmimentation complexes of more then 10 satellites, have been launched in USSR since 1983. It embodied a scanning antenna with electroniechanical beam control developed on the principles of surface-to-volume conversion of electromagnetic waves at open electrodyiiamic structures. Antenna contained a fixed reflecting mirror of parabolic cylinder shape with dimensions 1150x580 mm2 and linear scanning radiator borne out from the aperture bounds and executed on the basis of linear dielectric waveguide connected by means of electromagnetic field to one of diffraction grating from their set located on the rotated cylinder along its forming [2]. Antenna pattern spatial position is determined...

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