METHOD AND APPARATUS FOR PULSE REPETITION SEQUENCE WITH HIGH PROCESSING GAIN
First Claim
Patent Images
1. A method comprising:
- transmitting a first light pulse and a second light pulse with a first time interval between the transmission of the first light pulse and the second light pulse;
receiving a reflected representation of the first light pulse and a reflected representation of the second light pulse;
determining a first distance to a first object in response to the reflected representation of the first light pulse;
transmitting a third light pulse and a fourth light pulse with a second time interval between the transmission of the third light pulse and the forth light pulse wherein the second time interval is greater than the first time interval;
receiving a reflected representation of the third light pulse and a reflected representation of the fourth light pulse; and
determining a second distance to the first object in response to the reflected representation of the third light pulse.
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Abstract
The present application generally relates communications and hazard avoidance within a monitored driving environment. More specifically, the application teaches a system and method for improved target object detection in a vehicle equipped with a laser detection and ranging LIDAR system by employing a variable LIDAR pulse rate.
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Citations
20 Claims
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1. A method comprising:
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transmitting a first light pulse and a second light pulse with a first time interval between the transmission of the first light pulse and the second light pulse; receiving a reflected representation of the first light pulse and a reflected representation of the second light pulse; determining a first distance to a first object in response to the reflected representation of the first light pulse; transmitting a third light pulse and a fourth light pulse with a second time interval between the transmission of the third light pulse and the forth light pulse wherein the second time interval is greater than the first time interval; receiving a reflected representation of the third light pulse and a reflected representation of the fourth light pulse; and determining a second distance to the first object in response to the reflected representation of the third light pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a transmitter for transmitting a first light pulse and a second light pulse with a first time interval between the transmission of the first light pulse and the second light pulse and a third light pulse and a fourth light pulse with a second time interval between the transmission of the third light pulse and the forth light pulse wherein the second time interval is greater than the first time interval; a receiver for receiving a reflected representation of the first light pulse, a reflected representation of the second light pulse, a reflected representation of the third light pulse and a reflected representation of the fourth light pulse; and a processor for determining the distance to an object in response to the reflected representation of the first light pulse and the distance to the object in response to the reflected representation of the third light pulse. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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transmitting a first series of light pulses at a first pulse rate; receiving a reflected representation of the first series of light pulses; determining a first location of a plurality of objects in response to reflected representation of the first series of light pulses; transmitting a second series of light pulse at a second pulse rate; receiving a reflected representation of the second series of light pulses; and determining a second location of the plurality of objects in response to the reflected representation of the second series of light pulses. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification