RADAR DETECTION OF SEA SURFACE CONTAMINATION Russian patent published in 2015 - IPC G01C13/00 

FIELD: radio engineering, communication.

SUBSTANCE: surface controlled area is irradiated at azimuth angle α1.Reflected signal is recorded that allows detection from changed signal level of the surface abnormal area, signal being reflected therefrom features lower level compared with background signal magnitude. Then, controlled area is irradiated at azimuth angle α2 at the same radio wave incidence angle to record the signal reflected from abnormal and background areas. Signals from abnormal areas obtained at irradiation at azimuth angles α1 and α2 and those from background area obtained at irradiation at azimuth angles α1 and α2 are interrelated. Said relationships are compared to define availability of contamination of analysed surface.

EFFECT: higher probability of detection of contamination and lower probability of false alarms.

1 cl, 1 dwg