zip's

while(true) { Write it down; Think about it; Refine it; Sleep(); }
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2011年6月2日

外差法 Heterodyne
摘要： Read in Wikipedia - Mathematical principle Heterodyning is based on the trigonometric identity: The result is the sum of two sinusoidal signals, one at the sum f1 + f2 and one at the difference f1 - f... 阅读全文
posted @ 2011-06-02 22:20 zip's 阅读(796) 评论(0) 推荐(0)

调制 Modulation
摘要： http://en.wikipedia.org/wiki/Modulation 阅读全文
posted @ 2011-06-02 17:32 zip's 阅读(140) 评论(0) 推荐(0)