weak signal造句
31. The weak signal has been amplified by using operational amplifier ICL7650, second-order reverse-phase low pass filter, analog-digital converter AD574.
32. Also, the method of correlation detection is adopted to measure the weak signal in this measurement system.
33. According to the different types of power supply, there are chaotic state weak signal detection circuit of constant-current and chaotic state weak signal detection circuit of constant-voltage.
34. By using closed-loop feedback circuit weak signal can be picked up from noisy background.
35. This paper introduces cross-correlation detection theory and maximum likelihood theory and based on the two theories, puts forward a new method for weak signal detection.
36. If the space separation between strong signal and weak signal more than one beam width, the algorithm proposed can effectively extract weak signal without knowing weak signal's direction of arrival.
37. It is proved that stochastic resonance is a very useful tool for weak signal extraction from strong noise.
38. The technologies of light-to-current conversion, difference amplifier and filtering were used; the problem of weak signal detection was solved; various noises were decreased or restrained effectively.
39. By adding steerable sidelobe dips and achieving high sidelobe falloff rate, the windows can be used to detect a weak signal with a strong signal nearby.
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