METHOD FOR DOPPLER DETERMINATION OF MOTION PARAMETERS OF AIRLOGICAL RADIOSONDE AND RADAR SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC G01S13/76 G01S11/10 G01S13/95 G01W1/08 

FIELD: radio engineering.

SUBSTANCE: invention relates to active response radar and can be used in atmospheric radio sounding systems for measuring the slant range from a radar station to an aerological radiosonde (ARS) using the pulse method, detection of the ARS movement parameters (speed, law, and direction) using the Doppler method, its direction finding along angular coordinates, as well as transmitting telemetric information about the state of the atmosphere to the radar. The claimed method for Doppler determination of ARS movement parameters involves generation of an interrogation radio pulse consisting of two adjacent parts in the radar transmitting device. The first part of the interrogation radio pulse is filled with unmodulated coherent oscillations, and the second – with oscillations with intra-pulse harmonic frequency modulation (FM). An autodyne transceiver (ATR) is used as a transponder on-board of the ARS, containing an ARS antenna, an autodyne generator configured with the ability to electrically control the frequency, an autodyne signal recording unit, a resonant amplifier, a bandpass filter, an amplitude detector, a comparator, a time pulse selector, and a response pause pulses generator connected in series. The ATR operates in the mode of locking the autodyne generator frequency when the frequency of the radar transmitter coincides with the frequency of the autodyne generator. The response radio signal of the ARS is a combination of an almost continuous oscillation with narrow-band FM, intended for transmitting telemetric data in packet communication mode, periodic response radio pulses of the ARS followed by response pauses in the form of a short-term interruption of the signal. In this case, the first part of the response radio pulse, which carries the response of the autodyne generator to the synchronous action of the request radio pulse in the form of a constant phase shift of the oscillations, ensures their coherence and generation of a Doppler signal in the radar receiving device.

EFFECT: improved accuracy of determining the movement parameters of the ARS.

9 cl, 6 dwg