Wideband receiver for the measurement of distance by pseudo-random code signals

摘要

This receiver comprises a signal processor using the correlation of the received composite signal with early/late, locally generated pseudo-random codes. The code generator sends its signals to a delay line whose evenly spaced out outputs (E2, E1, P, L1, L2) are combined according to the relationship: c=E2-2E1+2L1-L2 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.