Volume 32 Issue 6
Nov.  2012
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WANG Sicheng, FANG Hanxian, YANG Shenggao, WENG Libin. Heating of Lower Ionosphere by Powerful HF Radio Wave[J]. Journal of Space Science, 2012, 32(6): 818-823. doi: 10.11728/cjss2012.06.818
Citation: WANG Sicheng, FANG Hanxian, YANG Shenggao, WENG Libin. Heating of Lower Ionosphere by Powerful HF Radio Wave[J]. Journal of Space Science, 2012, 32(6): 818-823. doi: 10.11728/cjss2012.06.818

Heating of Lower Ionosphere by Powerful HF Radio Wave

doi: 10.11728/cjss2012.06.818
  • Received Date: 2011-06-27
  • Rev Recd Date: 2012-03-08
  • Publish Date: 2012-11-15
  • The ionospheric heating by powerful HF radio wave can excite the disturbance of temperature, density and other parameters of ionospheric plasma. Based on Ohmic theory, the effect of high power radio wave on the lower ionosphere is studied, and the following conclusions can be drawn. Firstly, D region is the main absorption area of the radio wave, and the intensity of absorption decreases with the increase of radio wave frequency. When radio frequency is 6MHz (effective radio power is 200MW), the electron temperature increase can be up to nearly 520K, and electron density increase can reach about 7300cm-3. Secondly, the disturbance of electron temperature and density tend to be saturated after continuous heating. The time that the electron temperature needs to be saturated is of a scale of μs, while that of the electron density is ms. When stop heating, the electron temperature and density come back to the normal conditions quickly. Thirdly, the higher radio power is, the larger disturbance of electron temperature and density are caused, and the longer saturation time is needed. The saturation time at nighttime is longer than that at daytime under the same heating conditions.


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