METHOD FOR FORMING AND PROCESSING RADAR SIGNALS IN PULSED-DOPLER METEOROLOGICAL RADAR Russian patent published in 2022 - IPC G01S13/58 G01S13/95 

FIELD: radar meteorology.

SUBSTANCE: invention relates to radar meteorology, in particular to the generation of signals from pulse-Doppler radars intended for constructing an altitude profile of the velocity vector and other wind parameters, the so-called wind profilers, as well as for implementing the corresponding modes of universal meteorological radars. In the method, during transmission, probing pulses are emitted with a high repetition rate and a pulse-by-pulse change in the initial phase of the probing pulses according to the law ϕ[k]=-μ ⋅ (π/N) ⋅ k², and when receiving echo signals, their phase is corrected, making a correction that is equal to the change in the initial phase during the emission of the previous probing pulse, but opposite in sign, then, in each range channel, a coherent accumulation of the signal is performed and the frequency spectrum is calculated. At the same time, a series of pairs of bursts of pulses is sent in one direction with a high repetition rate and pulse-by-pulse modulation of the initial phase of the pulses according to a quadratic law, with coefficients μ different for even and odd bursts, and when each of these bursts is received, an appropriate phase correction is performed in each channel ranges produce coherent signal accumulation and calculation of the frequency spectrum and periodogram. After receiving all bursts, the periodograms are averaged separately for even and odd bursts, as a result of which two energy spectra are obtained corresponding to two values ​​of the coefficient μ. As a result of further processing, wind speed measurements are obtained in each range element in an extended measurement range.

EFFECT: increase in the range of the wind speed that can be uniquely measured in each element of the range.

1 cl, 3 dwg, 3 tbl