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以国产MWKGC04型640×512中波凝视热像仪整机的研制项目为基础,对探测器前端驱动电路中的3种主要噪声——传输网络噪声,偏置电压噪声和信号调理放大器噪声特性进行了深入的分析,结合MWKGC04探测器的主要性能指标,通过理论分析了前端驱动电路噪声的来源,并结合各部分的噪声模型加以推导,最终提出了行之有效的降低这3种主要噪声的方法,并且已经在实际的工程应用上收到的成果。
Based on the developed project of domestic MWKGC04 640 × 512 medium wave geothermal thermal imager, the noise characteristics of three kinds of main noise-transmission network noise, bias voltage noise and signal conditioning amplifier in the front-end driving circuit of the detector In-depth analysis, combined with the main performance indicators MWKGC04 detector, the source of the front-end driver circuit noise is analyzed theoretically, and combined with the noise model of each part to derive, and finally put forward an effective method to reduce these three kinds of main noise , And have received the results of the actual engineering application.