新型智能温度传感器在辐亮度标准探测器温控系统中的应用

高精度辐射定标方法和技术是现代空间遥感的主要支撑技术之一.辐亮度标准探测器是新一代高精度辐射定标方法中的核心部件,在遥感仪器的野外、机载和星上高精度辐射定标中具有广阔的应用前景.但是,温度变化是影响辐亮度标准探测器绝对精度和长期稳定性的一项关键因素,只有加入温控系统,将其控制在恒定的工作温度,才能使它的精度和稳定性得以保证.结合数字温度传感器DS18B20在辐亮度标准探测器精密温控系统中的应用经验,提出了采用DS18B20实现标准探测器温度高精度、高可靠性监测和控制的有效方案.实验结果证明,该方案是可靠和可行的.

Application of a new digital thermometer in the field of precision temperature controller for spectral radiance standard detector

The high accuracy radiometric calibration method and technology is one of the primary technologies of modern remote sensing. Spectral radiance standard detector is a key unit of the new high-accuracy radiometric calibration technology, and has potential applications in radiometric calibration of field, air-borne and space-borne sensors. The temperature change of spectral radiance standard detector is a primary factor of affecting its precision and stability. In order to keep the high accuracy of standard detector, a high-accuracy temperature-controlling device is needed to develop. We introduced a new digital thermometer DS18B20 in detail and designed a high-accuracy temperature controlling devices based on DS18B20. The experiment results prove that the temperature-controlling devices we designed can effectively decrease the temperature coefficient of spectral radiance standard detector and is reliable.