초록

before being sent to one of the correlators (C2) while the other (C1) receives the punctual signal (P). This especially reduces the positional error due to the multiple-path delays.

대표청구항 ▼

[ What is claimed is:] [1.] A wideband receiver for the measurement of distance by signals modulated by pseudo-random codes, said receiver demodulating and decoding a composite HF signal including several transmitted signals modulated by pseudo-random codes, said receiver comprising frequency-changi

[ What is claimed is:] [1.] A wideband receiver for the measurement of distance by signals modulated by pseudo-random codes, said receiver demodulating and decoding a composite HF signal including several transmitted signals modulated by pseudo-random codes, said receiver comprising frequency-changing, filtering and sampling-encoding means and a plurality of channels, each designed to demodulate and decode one of the signals modulated by pseudo-random codes on the basis of the samples given by the sampling-encoding means, each channel comprising a pseudo-random code generator synchronized by a control signal and correlation means receiving said samples of the composite signal and the code given by the pseudo-random code generator with adjustable delays and giving correlation signals so as to make it possible to determine said control signal, wherein said correlation means comprise at least two correlators, means for the combination of early and late pseudo-random codes to give a quadruple correlation signal and switch-over means to configure said correlators in a first mode of acquisition as early and late correlators and in a second mode as punctual and combined quadruple correlators.