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METHOD AND SYSTEM FOR USING SQUARE WAVE DIGITAL CHIRP SIGNAL FOR OPTICAL CHIRPED RANGE DETECTION
METHOD AND SYSTEM FOR USING SQUARE WAVE DIGITAL CHIRP SIGNAL FOR OPTICAL CHIRPED RANGE DETECTION
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机译:用于光啁啾范围检测的方波数字啁啾信号的方法和系统
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摘要
An apparatus is provided for using a square wave digital chirp signal for optical chirp range detection. A laser source emits an optical signal and a RF waveform generator generates an input digital chirp signal based on the square wave digital chirp signal. A frequency of the optical signal is modulated based on the input digital chirp signal. A splitter divides the optical signal into a transmit optical signal and a reference optical signal. A detector combines the reference optical signal and a return optical signal from an object. The detector generates an electrical output signal based on the combined reference optical signal and the return optical signal. A processor determines a range to the object based on a characteristic of a Fourier transform the electrical output signal. A method is also provided for using the square wave digital chirp signal for optical chirp range detection.
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