Receiver with a Hadamard mask for improving detection resolution during a scanning procedure of an optical sensing system

An optical sensing system, comprising:

• a transmitter configured to emit light towards an environment during a scanning procedure;
• and
• a receiver comprising:
• a frame beginning pattern configured to be aligned with a slit of the slit apparatus to identify a start of a frame at a new scanning angle captured during the scanning procedure;
• and
• a coded pattern configured to be aligned with the slit of the slit apparatus after the frame beginning pattern to provide sub-pixelization of the frame at said scanning angle;
• and
• a photodetector array positioned on a side of the Hadamard mask opposite to the slit apparatus, the photodetector array configured to detect light that passes through the Hadamard mask during the scanning procedure to generate the frame.

A scanning method of an optical sensing system to capture a frame, comprising:

• emitting light towards an environment;
• causing a Hadamard mask to resonate, the Hadamard mask comprising a frame beginning pattern and a coded pattern;
• identifying a start signal indicating a beginning of the frame at a new scanning angle when the light reflected from the environment passes through the frame beginning pattern of the Hadamard mask aligned with a slit of a slit apparatus;
• detecting, by a photodetector array, the light reflected from the environment that passes through each of a plurality of rows in the coded pattern of the Hadamard mask aligned with the slit of the slit apparatus after the frame beginning pattern in a sequential manner;
• and
• generating the frame based on the sequentially detected light.