Patent ID: 11885917
Assignee: SURF TECHNOLOGY AS
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 5:
6. The method according to claim 1, further comprising
directing for at least one image point more than one HF receive cross-beam that crosses said at least one HF transmit beam at different directions, with HF receive beam axes that crosses the HF transmit beam axes at essentially the same location close to an image point, and
recording at least two scattered HF cross-beam receive signals for each said HF receive cross-beams scattered from the same pulse complexes with different LF pulses, and
comparing said at least two scattered HF cross-beam receive signals for each said HF receive cross-beam, to estimate at least one of i) the NPD, and ii) the PFD, of the transmitted HF pulse, and
combining said estimated PFD and/or NPD for each said HF receive cross-beams for said at least one image point, to form new estimated PFD and/or NPD with reduced estimation error for said image point, and
using said new estimated PFD and/or NPD for further processing.