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US Patent 11982762 Techniques to use power spectrum density in coherent lidar systems

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Patent
Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
119827620
Patent Inventor Names
Mina Rezk0
Jose Krause Perin0
Kumar Bhargav Viswanatha0
Rajendra Tushar Moorti0
Date of Patent
May 14, 2024
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Patent Application Number
178425490
Date Filed
June 16, 2022
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US Patent 9081090 System and method for increasing coherence length in lidar systems
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US Patent 9443535 Systems and methods for source signal separation
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US Patent 9575341 Solid state LIDAR circuit with waveguides tunable to separate phase offsets
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...
Patent Primary Examiner
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James R Hulka
0
Patent abstract

A number of measurements of an input spectrum is determined based on a scan mirror speed of the LiDAR system and a predetermined accuracy threshold in the number of measurements of the input spectrum. A set of signals are sampled at the LiDAR system and the set of signals are converted to a frequency domain to generate a set of sampled signals in the frequency domain. The set of signals are received consecutively over time. A set of first functions are created based on the set of sampled signals. The set of first functions are averaged to generate a second function. The second function represents a power spectrum density estimate of the set of signals. A peak value of the second function is detected to determine range and velocity information related to a target based on a corresponding frequency of the peak value of the second function.

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