๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

๐Ÿ”ฌ Science/๐Ÿ“ป Signal

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์ƒ์ฒด ์‹ ํ˜ธ ๋ ˆ์ด๋” ์‹œ์Šคํ…œ์„ ์‚ฌ์šฉํ•œ ์ˆ˜๋ฉด ๋ถ„๋ฅ˜ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์ ์šฉ ์ฐธ๊ณ  ๋…ผ๋ฌธ : R.de Goederen et al(2021), "Radar-based sleep stage classification in children undergoing polysomnography: a pilot-study", Sleep Medicine 82 XeThru X2M200 & X4M200 ๋ ˆ์ด๋” ๋ชจ๋“ˆ -> ์‚ฌ๋žŒ์˜ resting and breathing ์ƒํƒœ์ผ ๋•Œ์˜ ์ฃผ๊ธฐ์ ์ธ ์›€์ง์ž„์„ ๊ด€์ฐฐํ•จ ์ด ๋ชจ๋“ˆ์€ local oscillator์—์„œ ์ƒ์„ฑ๋œ ์ผ์ •ํ•œ ํŽ„์Šค๊ฐ€ ์•ˆํ…Œ๋‚˜๋ฅผ ํ†ตํ•ด ์ „์†ก๋˜๋Š” pulse-Doppler processing์„ ์‚ฌ์šฉํ•จ ํ•ด๋‹น ํŽ„์Šค๋Š” ๋ฐ˜์‚ฌํŒ์„ ๋งŒ๋‚  ๋•Œ๊นŒ์ง€ ๊ณต๊ฐ„์„ ํ†ตํ•ด ์ „ํŒŒ๋˜๋Š”๋ฐ, ์ „์†ก๋œ ์—๋„ˆ์ง€ ์ค‘ ์ผ๋ถ€๋Š” ์›€์ง์ž„์œผ๋กœ ์ธํ•œ ์œ„์ƒ ๋ณ€์กฐ์™€ ํ•จ๊ป˜ ์ˆ˜์‹ ๊ธฐ๋กœ ๋‹ค์‹œ ๋ฐ˜์‚ฌ๋œ๋‹ค. ์ˆ˜์‹ ๋œ RF ->..
๋ ˆ์ด๋” ์‹ ํ˜ธ ์ธ์‹์„ ์œ„ํ•œ CNN ์„ค๊ณ„ ๋ถ„์„ ๋…ผ๋ฌธ : Xuezhong Wang(2021), "Electronic radar signal recognition based on wavelet transform and convolution neural network", Alexandria Engineering Journal 61. CNN์„ ์ดํ•ดํ•˜๊ธฐ ์œ„ํ•œ ๊ธฐ๋ณธ์ ์ธ ๊ฐœ๋… Layer - 2๊ฐœ์˜ ์ธ์ ‘ ๋…ธ๋“œ๋Š” Convolution Layer์™€ Pooling Layer๋กœ ๋ฒˆ๊ฐˆ์•„ ๊ตฌ์„ฑ๋œ๋‹ค. ๋งˆ์ง€๋ง‰์€ Fully Connection Layer Convolution Layer - feature(ํŠน์ง•. ํ”ผ์ฒ˜)๋ฅผ ์ถ”์ถœํ•˜๋Š” ๊ณ„์ธต์œผ๋กœ, upper layer์˜ input์— ๋Œ€ํ•œ sliding window ํ•ฉ์„ฑ๊ณฑ์„ ํ•จ์œผ๋กœ์„œ, ๊ฐ convolution kernel์ด local ..

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