METHOD AND STATION OF RESONANCE RADIO DETECTION AND LOCATION Russian patent published in 2017 - IPC G01S13/52 

FIELD: radar ranging.

SUBSTANCE: invention relates to resonant radio location and detection based on the known phenomenon of abrupt increase in the amplitude of the probing radio signal reflected from an aircraft at the wave length that is equal to the double the value of the size of the aircraft’s airframe and/or resonating elements, for example wings and suspended structures, and can be used in an air traffic control system. Said result is achieved due to the following:preliminary selection of the frequency band, covering the resonance range of both aerodynamic and ballistic aircrafts; periodic frequency scanning of air to receive, select and rank the allowable probe frequences in the selected band that are free of radio noise; ranking of the allowable probe frequencies, which are free of radio noise, in the order of their proximity to the center of the frequency band of the resonating of the aircraft; successive radiation in each probing cycle at long range and short radio pulses at different frequencies within the currently permitted range for detecting the aircraft in the far zone and resolution of marks from the aircraft in the near zone of detection respectively; reduced divergence of radio beam in the elevation plane in the moments of radiating long radio pulses to increase energy density in the radio beam and further increase in the aircraft detection range; automatic switch to spare frequencies in the order of their ranking in case of active noise at the frequency of probing; parallel processing of resonance signals throughout the dedicated zone of air space.

EFFECT: technical result is increased efficiency of resonant radar maintenance of aircraft movement and bigger number of serviced types of aircrafts.

16 cl, 5 dwg