摘要
通过计算微测热辐射计热敏电阻的噪声功率谱密度,分析双相关采样电路(CDS)的噪声抑制特性,推导出了CDS读出电路的输出噪声电压的计算模型。CDS读出电路能有效地抑制微测热辐射计的热噪声和闪烁噪声,并且输出噪声电压中热噪声占主要部分。
Through calculating the power spectrum density of the microbolometer thermal sensitive resistor and analyzing the noise - inhibiting characteristics of the correlated double sampling （CDS） circuit, a calculating model of the CDS circuit output noise voltage is developed. The CDS readout circuit can inhibit thermal noise as well as flicker noise of the microbolometer effectively, and the thermal noise dominates the output noise voltage.
出处
《微处理机》
2009年第1期36-38,共3页
Microprocessors
基金
国家杰出青年基金(60425101)
关键词
微测热辐射计
双相关采样
热噪声
闪烁噪声
计算模型
Microbolometer
Correlated double sampling
Thermal noise
Flicker noise
Calculating model
