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Apparatus and method using digitally controlled integration for signal detection with improved noise characteristics
Apparatus and method using digitally controlled integration for signal detection with improved noise characteristics
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机译:使用数字集成控制信号的装置和方法具有改善的噪声特性
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摘要
A signal conditioning circuit reduces an interferrometric fiber optic gyro (IFOG) noise, the IFOG including a light source, Integrated Optics Chips (IOC) and a coupler to output an optical power signal corresponding to a rotation-induced phase shift in a fiber coil of the IFOG. The signal conditioning circuit includes a photodiode that converts the optical power signal to a corresponding electrical compensation signal and one or more switched integrators that receive and process the electrical compensation signal by selectively switching between a plurality of modes of each one of the one or more switched integrators. A method of signal conditioning in the IFOG to reduce IFOG noise includes the steps of converting the optical power signal to a corresponding electrical compensation signal and selectively integrating a current of the electrical compensation signal using at least one switched integrator.
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