Time-of-flight based distance measuring method and distance measuring system

A time-of-flight based distance measuring system, comprising:

• a pulse generator unit;
• a control circuit, coupled to the pulse generator unit, the control circuit being configured to drive the pulse generator unit to send N consecutive pulses intermittently, N being a positive integer greater than one, wherein the N consecutive pulses are reflected by a target object and a reflection signal is reflected from the target object accordingly;
• a time-of-flight sensor, controlled by the control circuit, the time-of-flight sensor being configured to, during arrival of the reflected signal at the time-of-flight sensor, perform sampling operation to sample the reflected signal multiple times according to a predetermined sampling interval within a predetermined sampling duration and accordingly generate a sampling result, wherein the sampling operation is disabled during a time interval between sending a first one of the N consecutive pulses and sending a Kth pulse of the N consecutive pulses, and is enabled at a beginning of the Kth pulse of the N consecutive pulses;
• K is a positive integer greater than one and less than or equal to N;
• the time-of-flight is further configured to detect time of flight of a single pulse of the N consecutive pulses according to the sampling result, and measure a distance between the target object and a reference position according to the time of flight.