Chirped illumination LIDAR system

A method for detection of objects comprising:

• transmitting, during each illumination period of a sub-group of illumination periods, a first plurality of radiation pulses that form a decimated chirp sequence of radiation pulses;
• the decimated chirp sequence is a sparse representation of a chirp signal;
• receiving, by a receiver, during each reception period of a sub-group of reception periods, one or more received light pulses from one or more objects that were illuminated by the one or more radiation pulses transmitted during each illumination period;
• converting, by the receiver, the one or more received light pulses to output information;
• wherein the converting comprises applying a shutter function on intermediate signals, the intermediate signals represent radiation sensed by the multiple radiations sensing elements, wherein the shutter function represents the chirp signal.

A non-transitory computer readable medium, that stores instructions for:

• transmitting, during each illumination period of a sub-group of illumination periods, a first plurality of radiation pulses that form a decimated chirp sequence of radiation pulses;
• the decimated chirp sequence is a sparse representation of a chirp signal;
• receiving, by a receiver, during each reception period of a sub-group of reception periods, one or more received light pulses from one or more objects that were illuminated by the one or more radiation pulses transmitted during each illumination period;
• converting, by the receiver, the one or more received light pulses to output information;
• wherein the converting comprises applying a shutter function on intermediate signals, the intermediate signals represent radiation sensed by the multiple radiations sensing elements, wherein the shutter function represents the chirp signal.