Patent ID: 7103500

Claim:
A method for distance measurement comprising the steps of: setting initial components for a vector of parameters defining modulation of sent pulses; emitting a pattern of said sent pulses toward a target according to said vector of parameters; receiving a pattern of received pulses reflected from the target; evaluating observability of pulse transit time through analysis of patterns of said sent and received pulses; obtaining a pulse transit time measurement through the analysis of said patterns of said sent and received pulses if said observability evaluation is satisfactory; calculating sought distance by taking said pulse transit time measurement as an input if said observability evaluation is satisfactory; performing a correction on the components of said vector of parameters of modulation of said sent pulses if said observability evaluation is not satisfactory; and returning to said emitting a pattern of modulated pulses step of said method, thereby providing an effective protection against disturbances that affect the process of measurement; wherein said distance measurement is based on pulse transit time.