Emitter, lidar, and detection method

A LiDAR, comprising:

• an emitter, comprising:
• a substrate;
• and
• a plurality of lasers, arranged on the substrate in an array and configured to emit detection beams, wherein a laser of the plurality of lasers is configured to emit a detection beam through a flat light emitting region, and a size of the flat light emitting region in a first direction is greater than a size of the flat light emitting region in a second direction;
• a receiver comprising detectors, wherein the detectors are configured to receive echoes formed by reflection of detection beams emitted by the plurality of lasers from an object, and convert the echoes into electrical signals;
• and
• a processor coupled to the receiver and configured to generate point cloud data based on the electrical signals.

A LiDAR, comprising:

• an emitter configured to emit detection beams to a target region;
• a receiver configured to receive echoes formed by reflection of the detection beams from an object and convert the echoes into electrical signals;
• and
• a processor coupled to the receiver and configured to:
• select valid signals from the electrical signals,
• determine, for at least two of the electrical signals, whether the at least two of the electrical signals are valid signals or noise through a first amplitude threshold, a second amplitude threshold, and a pulse width threshold, wherein the first amplitude threshold is higher than the second amplitude threshold, and
• generate point cloud data based on the valid signals.