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

Claim 27:
28. The instrument according to claim 17, where
said transmitter means comprises separate HF and LF transducer elements, and
said receiver means is set up to use the HF transducer elements to produce HF back-scatter receive beams that are co-aligned with the HF transmit beams with the same beam axes, in addition to said HF cross-over receive beams, and
said processor means is arranged to from one or both of said estimated NPD and PFD to estimate noise corrections for the HF back-scatter receive signals, and
said processor means is arranged to correct the HF back-scatter signals with said estimated noise corrections to produce corrected HF back-scattered signals, and
said processor means is arranged to combine said corrected HF back-scattered signals to produce estimates of one or both of i) linear HF backscatter signal with suppression of multiple scattering noise, ii) nonlinear HF back-scatter signal with suppression of linear scattering signals.