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首页> 外文会议>International symposium on photoelectronic detection and imaging;ISPDI 2011 >The design of the Langmuir probe onboard a seismo-electromagnetic satellite
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The design of the Langmuir probe onboard a seismo-electromagnetic satellite

机译：地震电磁卫星上的Langmuir探测器的设计

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The double Langmuir probe, as a pay load of a seism-electromagnetic satellite, has been designed for in situ measurements of the parameters of the ionosphere plasma on the 500km altitude orbit to research the electromagnetic coupling between the solid-earth activities and the ionosphere disturbances. The Langmuir probe is comprised of two spherical sensors: the diameter of the smaller one is lcm and the other one is 5cm. The two sensors are mounted on two parallel booms on the satellite, which are half meter far from each other. The two main ionosphere parameters measured by the Langmuir probe are electron density and electron temperature, which are computed from the I-V curves. The I-V curve is given by a current flow through a sensor in case of a sweep voltage is applied to the sensor. There are three main work modes for the Langmuir probe: the normal mode, the burst mode and the decontamination mode. The normal mode is for the general measurement of the ionosphere parameters around the globe with Is time resolution, while the burst mode is to measure the ionosphere over the interested areas, like the areas with more earthquake activities, with 0.5s time resolution. The decontamination mode would work if the I-V curves shown hysteresis phenomenon, which indicated that the sensors may be contaminated by the outgassing of the satellite. The description of the Langmuir probe instrument and its capabilities are provided.
机译：Langmuir双探头是地震电磁卫星的有效载荷，旨在对500 km高度轨道上的电离层等离子体参数进行原位测量，以研究固体地球活动与电离层扰动之间的电磁耦合。 。 Langmuir探头由两个球形传感器组成：较小的一个直径为1厘米，另一个的直径为5厘米。这两个传感器安装在卫星上的两个平行吊杆上，两个吊杆彼此相距半米。 Langmuir探针测量的两个主要电离层参数是电子密度和电子温度，它们是根据I-V曲线计算得出的。 I-V曲线由在传感器上施加扫描电压时流过传感器的电流给出。 Langmuir探头有三种主要工作模式：正常模式，爆裂模式和去污模式。正常模式用于以Is时间分辨率对全球电离层参数进行常规测量，而突发模式用于以0.5s的时间分辨率对感兴趣区域（如地震活动较多的区域）上的电离层进行测量。如果I-V曲线显示出磁滞现象，则去污模式将起作用，这表明传感器可能被卫星的脱气污染。提供了Langmuir探针仪器及其功能的说明。

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