ALTERNATING CHIRP FREQUENCY MODULATED CONTINUOUS WAVE DOPPLER LIDAR
First Claim
1. A coherent lidar system, comprising:
- a first light source and a second light source configured to respectively output a first continuous wave and a second continuous wave;
a first modulator and a second modulator configured to respectively modulate a frequency of the first continuous wave and the second continuous wave to respectively provide a first frequency modulated continuous wave (FMCW) signal and a second FMCW signal;
a beam combiner configured to combine the first FMCW signal and the second FMCW signal into a combined FMCW signal; and
one or more aperture lenses configured to transmit an output signal obtained from the combined FMCW signal and to obtain a return signal resulting from a reflection of the output signal by a target.
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Abstract
A coherent lidar system includes a first light source and a second light source to respectively output a first continuous wave and a second continuous wave, and a first modulator and a second modulator to respectively modulate a frequency of the first continuous wave and the second continuous wave to respectively provide a first frequency modulated continuous wave (FMCW) signal and a second FMCW signal. The system also includes a beam combiner to combine the first FMCW signal and the second FMCW signal into a combined FMCW signal, and one or more aperture lenses to transmit an output signal obtained from the combined FMCW signal and to obtain a return signal resulting from a reflection of the output signal by a target.
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Citations
20 Claims
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1. A coherent lidar system, comprising:
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a first light source and a second light source configured to respectively output a first continuous wave and a second continuous wave; a first modulator and a second modulator configured to respectively modulate a frequency of the first continuous wave and the second continuous wave to respectively provide a first frequency modulated continuous wave (FMCW) signal and a second FMCW signal; a beam combiner configured to combine the first FMCW signal and the second FMCW signal into a combined FMCW signal; and one or more aperture lenses configured to transmit an output signal obtained from the combined FMCW signal and to obtain a return signal resulting from a reflection of the output signal by a target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of assembling a coherent lidar system, comprising:
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arranging a first light source and a second light source to respectively output a first continuous wave and a second continuous wave; disposing a first modulator and a second modulator to respectively modulate a frequency of the first continuous wave and the second continuous wave to respectively provide a first frequency modulated continuous wave (FMCW) signal and a second FMCW signal; arranging a beam combiner to combine the first FMCW signal and the second FMCW signal into a combined FMCW signal; and arranging one or more aperture lenses to transmit an output signal obtained from the combined FMCW signal and to obtain a return signal resulting from a reflection of the output signal by a target. - View Dependent Claims (12, 13)
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14. A vehicle, comprising:
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a coherent lidar system comprising; a first light source and a second light source configured to respectively output a first continuous wave and a second continuous wave; a first modulator and a second modulator configured to respectively modulate a frequency of the first continuous wave and the second continuous wave to respectively provide a first frequency modulated continuous wave (FMCW) signal and a second FMCW signal; a beam combiner configured to combine the first FMCW signal and the second FMCW signal into a combined FMCW signal; and one or more aperture lenses configured to transmit an output signal obtained from the combined FMCW signal and to obtain a return signal resulting from a reflection of the output signal by a target; and a vehicle controller configured to augment or automate operation of the vehicle based on information from the coherent lidar system. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification