METHOD FOR IMPROVING SIGNAL-TO-NOISE OF PHOTOACOUSTIC SIGNAL IN FREQUENCY-DOMAIN PHOTOACOUSTIC MEASUREMENTS

According to the present invention, a plurality of periodic signals or a plurality of chirped signals are absorbed in a light absorber. As a processing device is configured to perform matched filtering processing on a photoacoustic signal generated by an optical absorber and measured by a photoacous...

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1. Verfasser:	KANG DONGYEL
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEDICAL OR VETERINARY SCIENCE PHYSICS SURGERY TESTING
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Beschreibung
Zusammenfassung:	According to the present invention, a plurality of periodic signals or a plurality of chirped signals are absorbed in a light absorber. As a processing device is configured to perform matched filtering processing on a photoacoustic signal generated by an optical absorber and measured by a photoacoustic measuring device using a coherent summing method or a non-coherent summing method in a frequency domain, it is possible to improve the signal-to-noise ratio of the photoacoustic signal. The method of the present invention includes a step of selecting, by the processing device, a plurality of different frequencies of periodic signals to be emitted through a light source. 본 발명에 의하면, 다수 개의 주기 신호 또는 다수 개의 처프 신호를 광 흡수체에 흡수시키고, 상기 광 흡수체에서 발생하여 광음향 측정기로 측정되는 광음향 신호를, 처리장치가 주파수 영역에서 결맞음 합산 방법 또는 비결맞음 합산 방법을 이용해서 정합 필터링 처리를 하도록 구성됨에 따라, 상기 광음향 신호의 신호 대 잡음비를 향상시킬 수 있게 된다.