AIRCRAFT NAVIGATION METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01S13/48 

FIELD: radar ranging.

SUBSTANCE: invention relates to the field of radar equipment (RRC). Result is achieved due to the fact that in the aircraft navigation method, radio waves are emitted on three non-overlapping beams simultaneously, the beam signals are generated from one continuous harmonic oscillation by its amplitude modulation with a low-frequency harmonic oscillation, subsequent conversion of the received signal into an amplitude-modulated sequence of phase-modulated radio pulses of a given duration, which is divided by frequency filtering into three radio pulse sequences, wherein the reflected radio waves are received by the same three beams and treated by a correlation method. Device intended for method implementation contains transmitting device including master oscillator, amplitude-pulse modulator, power amplifier, amplitude modulator, power divider, phase modulator, continuous harmonic signal generator and code sequence generator. Common part of receiving and transmitting devices comprises a Y-circulator, an antenna, a pulse generator, a band-pass filter tuned to the frequency range of the first beam, a second Y-circulator, a band-pass filter tuned to the frequency range of the second beam, and the second beam antenna, the third Y-circulator, the band-pass filter tuned to the third beam frequency band, and the third beam antenna. Receiving device comprises a protection device designed to protect a receiving device from input signals and high-level interference, a low-noise amplifier, a quadrature phase detector, a frequency-selective device which is in form of a first frequency separator, a second frequency separator, second and third quadrature phase detectors, inputs of each of three detectors are connected to three outputs of the first frequency separator, and inputs of the reference signal of these detectors are connected to outputs of the second frequency separator.

EFFECT: technical result is faster RRC, as well as accuracy of determining the location of aircraft (AC) when moving at high speeds and increasing range of altitude during flight.

2 cl, 7 dwg