US 9,810,773 B2
Mitigation of anomalous propagation effects in radar
Bryan Robinson, Hampshire (GB); Noel Turner, Hampshire (GB); and Philip Trevelyan Edwards, Hampshire (GB)
Assigned to BAE SYSTEMS plc, London (GB)
Appl. No. 14/651,940
Filed by BAE SYSTEMS plc, London (GB)
PCT Filed Dec. 12, 2013, PCT No. PCT/GB2013/053263
§ 371(c)(1), (2) Date Jun. 12, 2015,
PCT Pub. No. WO2014/091230, PCT Pub. Date Jun. 19, 2014.
Claims priority of application No. 12275205 (EP), filed on Dec. 14, 2012; and application No. 1222606.4 (GB), filed on Dec. 14, 2012.
Prior Publication US 2015/0316642 A1, Nov. 5, 2015
Int. Cl. G01S 7/292 (2006.01); G01S 7/41 (2006.01); G01S 13/02 (2006.01); G01S 13/524 (2006.01)
CPC G01S 7/292 (2013.01) [G01S 7/2921 (2013.01); G01S 7/414 (2013.01); G01S 13/0218 (2013.01); G01S 13/5244 (2013.01); G01S 2013/0227 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of mitigating the effects of anomalous propagation in a Radar system, the method comprising:
receiving a plurality of returns from a plurality of transmit pulses;
calculating a difference in magnitude between each of the plurality of returns and its successor; and
if one of the calculated differences indicates a first step change greater than a first predetermined threshold, calculating a first average magnitude of the returns received after the first step change, and replacing the returns received before the first step change with synthesized returns having a magnitude equal to the first calculated average magnitude.