US 11,747,460 B2
Apparatus and method for compensating for doppler expansions
Wolfgang C. Wittekind, Laupheim (DE); Stefan Beer, Elchingen (DE); and Peter Feil, Neu-Ulm (DE)
Assigned to Hensoldt Sensors GmbH, Taufkirchen (DE)
Filed by Hensoldt Sensors GmbH, Taufkirchen (DE)
Filed on Jul. 7, 2021, as Appl. No. 17/368,873.
Claims priority of application No. 20184520 (EP), filed on Jul. 7, 2020.
Prior Publication US 2022/0011424 A1, Jan. 13, 2022
Int. Cl. G01S 13/44 (2006.01); G01S 7/40 (2006.01); G01S 7/04 (2006.01); G01S 13/95 (2006.01)
CPC G01S 13/449 (2013.01) [G01S 7/04 (2013.01); G01S 7/403 (2021.05); G01S 13/4463 (2013.01); G01S 13/953 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for compensating for weather-independent Doppler expansions in radar signals of a weather radar system, the apparatus comprising:
a receiving device for receiving a representation of the radar signals, wherein the representation comprises pixels of a range Doppler matrix;
a calculation device which is configured to calculate azimuth angles (Azi) for the pixels by fine bearing; and
a compensation device which is designed to correct weather-independent Doppler shifts for the pixels based on the calculated azimuth angle (Azi; AziMopu) and thus to compensate for the weather-independent Doppler expansions and to provide them as a compensated representation.