Patent ID: 7683601
Filing Date: 2010-03-23
Classification: G01C,G01D,G01P

Abstract:
1. A digital acquisition device for a useful signal, the useful signal modulating the amplitude of a carrier HF 1 , the carrier HF 1 having a frequency and a phase that are known, a modulation of the amplitude of the carrier by the useful signal forming a signal to be processed, comprising: a summing device for creating an aggregate signal from a sum of the signal to be processed and a neutralizing signal, the neutralizing signal being a product of the carrier HF a load amplifier device for amplifying the aggregate signal and for producing an amplified aggregate signal; a quadrant comparison device QC for the sign of the amplified aggregate signal and the sign of the carrier which delivers a comparison signal; a sampling device for producing a bitstream from the comparison signal, the bitstream forming an image of the useful signal; and an integration device for producing the neutralizing coefficient, from the bitstream.