利用含純增長模式線的異常非相干散射譜反演擾動電子溫度
doi: 10.11999/JEIT170823
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1.
(西安電子科技大學物理與光電工程學院 西安 710071) ②(中國電波傳播研究所電波環(huán)境特性及模化技術(shù)重點實驗室 青島 266107)
國家自然科學基金(61475123, 61571355),陜西省自然科學基礎(chǔ)研究計劃(2016JQ4015)
Inversion of Disturbed Electron Temperature by Anomalous Incoherent Scatter Spectra with Pure-growth Mode Line
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1.
(School of Physics and Optoelectronic Engineering, Xidian University, Xi&rsquo
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2.
(National Key Laboratory of Electromagnetic Environment, China Research Institute of Radio Wave Propagation, Qingdao 266107, China)
The National Natural Science Foundation of China (61475123, 61571355), The Program for Natural Science Basic Research of Shaanxi Province (2016JQ4015)
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摘要: 基于平衡態(tài)非相干散射理論的GUISDAP程序包在擬合含有純增長模式線的非相干散射功率譜及反演加熱擾動電離層參量中存在嚴重誤差,該文提出一種以未加熱時刻的電離層參量為先驗信息,利用最小二乘法搜尋最佳高斯峰描述純增長模式線來修正實測非相干散射譜,并使用電子超高斯分布的非相干散射理論擬合修正后非相干散射譜來反演獲取加熱擾動電子溫度的方法。通過將該方法用于分析2010年秋季我國在挪威開展的電離層加熱實驗數(shù)據(jù)表明:利用該方法對含純增長模式線的實測譜修正擬合后獲得的電子溫度比未加熱時刻提高約800 K左右,增幅比例約13%~50%,該結(jié)果與現(xiàn)有文獻報道的電離層加熱引起的電子溫度增幅范圍吻合較好。結(jié)論表明該方法適用于基于含純增長模式線的非相干散射譜反演擾動電離層參量。Abstract: In the fitting process of the incoherent scatter power spectra with pure-growth mode line and the inversion of the disturbed ionospheric parameters, the GUISDAP package which is based on the equilibrium incoherent scatter theory, always exits serious error. Assuming the ionospheric parameters at heating-off time as a priori information, by using the least squares method to search the best Gaussian peak for the modification of the measured incoherent scatter spectra, one method is provided to obtain the disturbed electron temperature through fitting the modified measured spectra by taking advantage of the incoherent scatter theory of electron super-Gaussian distribution. This method is used to the ionospheric heating experimental data which is conducted in Norway in the autumn of 2010, and the results indicate that the electron temperature obtained by fitting the modified spectra is about 800 K higher than that of the heating off time, and the increase ratio is about 13%~50%, which is well coincided with the electron temperature increase range of ionospheric heating reported in the existing literature. The conclusion shows that the method is applicable to the inversion of disturbed ionospheric parameters by using of the incoherent scatter spectra with pure-growth mode line.
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楊巨濤, 李清亮, 王建國, 等. 雙頻雙波束加熱電離層激發(fā)甚低頻/極低頻輻射理論分析[J]. 物理學報, 2017, 66(1): 348-356. doi: 10.7498/aps.66.019401. YANG Jutao, LI Qingliang, WANG Jianguo, et al. Theory of very low frequency/extra low frequency radiation by dual- beam beat wave heating ionosphere[J]. Acta Physica Sinica, 2017, 66(1): 348-356. doi: 10.7498/aps.66.019401. 趙海生, 許正文, 吳振森, 等. 電離層中釋放六氟化硫效應(yīng)的三維精細模擬研究[J]. 物理學報, 2016, 65(20): 209401. doi: 10.7498/aps.65.209401. ZHAO Haisheng, XU Zhengwen, WU Zhensen, et al. A three- dimensional refined modeling for the effects of SF6 release in ionosphere[J]. Acta Physica Sinica, 2016, 65(20): 209401. doi: 10.7498/aps.65.209401. 丁宗華, 吳健, 許正文, 等. 電離層非相干散射雷達探測技術(shù)應(yīng)用展望[J]. 電波科學學報, 2016, 31(1): 193-198. doi: 10.13443/j/cjors.2015030201. DING Zonghua, WU Jian, XU Zhengwen, et al. The application prospect of the ionospheric incoherent scatter measurement[J]. Chinese Journal of Radio Science, 2016, 31(1): 193-198. doi: 10.13443/j/cjors.2015030201. WANNBERG G, WOLF I, VANHAINEN L G, et al. The EISCAT Svalbard radar: A case study in modern incoherent scatter radar system design[J]. Radio Science, 1997, 32(6): 2283-2307. doi: 10.1029/97RS01803. LEHTINEN M S and HUUSKONEN A. General incoherent scatter analysis and GUISDAP[J]. Journal of Atmospheric and Terrestrial Physics, 1996, 58: 435-452. doi: 10.1016/ 0021-9169(95)00047-X. STUBBE P, KOHL H, and RIETVELD M T. Langmuir turbulence and ionospheric modification[J]. Journal of Geophysical Research: Space Physics, 1992, 97: 6285-6297. doi: 10.1029/91JA03047. KOHL H and RIETVELD M T. Harmonics of the ion acoustic frequency in the heater induced ion spectrum[J]. Journal of Geophysical Research: Space Physics, 1996, 101(A3): 5391-5395. doi: 10.1029/95JA03342. RIETVELD M T, ISHAM B, KOHL H, et al. Measurements of HF-enhanced plasma and ion lines at EISCAT with high-altitude resolution[J]. Journal of Geophysical Research: Space Physics, 2000, 105: 7429-7439. doi: 10.1029/1999JA 900476. CHENG Musong, XU Bin, WU Zhensen, et al. Observation of VHF incoherent scatter spectra disturbed by HF heating [J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2013, 105: 245-252. doi: 10.1016/j.jastp.2013.08.010. 程木松, 徐彬, 吳振森, 等. 電離層加熱實驗中超強電子密度增強特征[J]. 地球物理學報, 2014, 57(11): 3633-3641. doi: 10.6038/cjg20141117. CHENG Musong, XU Bin, WU Zhensen, et al. A large increase of electron density in ionospheric heating experiment [J]. Chinese Journal of Geophysics, 2014, 57(11): 3633-3641. doi: 10.6038/cjg20141117. EKEBERG J, STASIEWICZ K, WANNBERG G, et al. Incoherent scatter ion line enhancements and auroral arc-induced Kelvin-Helmholtz turbulence[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2015, 122: 119-128. doi: 10.1016/j.jastp.2014.10.018. KUO S P. Ionospheric modifications in high frequency heating experiments[J]. Physics of Plasmas, 2015, 22: 012901. doi: 10.1063/1.4905519. GUREVICH A V, HAGFORS T, CARLSON H, et al. Electron temperature measurements by incoherent scattering in the presence of strong small scale temperature irregularities[J]. Physics Letters A, 1998, 246(3/4): 335-340. doi: 10.1016/S0375-9601(98)00422-8. ASHRAFI M, KOSCH M J, and HONARY F. Heater- induced altitude descent of the EISCAT UHF ion line enhancements: Observations and modelling[J]. Advances in Space Research, 2006, 38(11): 2645-2652. doi: 10.1016/j.asr. 2005.06.079. ZHENG Jian, YU C X, and ZHENG Z J. Effects of non- Maxwellian (super-Gaussian) electron velocity distribution on the spectrum of Thomson scattering[J]. Physics of Plasmas, 1997, 4(7): 2736-2740. doi: 10.1063/1.872141. 徐彬, 吳振森, 吳健, 等. 電離層加熱期間非相干散射譜的反演[J]. 電波科學學報, 2008, 23(4): 713-716. doi: 10.13443/ j.cjors.2008.04.020. XU Bin, WU Zhensen, WU Jian, et al. Inversion of incoherent scatter spectra during ionosphere heating[J]. Chinese Journal of Radio Science, 2008, 23(4): 713-716. doi: 10.13443/j.cjors. 2008.04.020. XU Bin, WANG Zhange, XUE Kun, et al. The inversion of incoherent scatter spectra with a non-Maxwellian electron distribution[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2010, 72(5): 492-497. doi: 10.1016/j.jastp.2010.01. 006. WU Lili, ZHOU Qinghou, CHEN Tiejun, et al. Application of particle swarm optimization method to incoherent scatter radar measurement of ionosphere parameters[J]. Journal of Geophysical Research: Space Physics, 2015, 120(9): 8096-8110. doi: 10.1002/2014JA020970. VIIRTANEN I I, MCKAY-BUKOWSKI D, VIERINEN J, et al. Plasma parameter estimation from multistatic, multibeam incoherent scatter data[J]. Journal of Geophysical Research: Space Physics, 2014, 119(12): 10528-10543. doi: 10.1002/ 2014JA020540. 程木松, 徐彬, 吳振森, 等. 基于加熱激發(fā)等離子體線級聯(lián)結(jié)構(gòu)的電子密度反演[J]. 電波科學學報, 2015, 30(3): 463-469. doi: 10.13443/j.cjors.2014072401. CHENG Musong, XU Bin, WU Zhensen, et al. Inversion of ambient electron density for the modified ionosphere from HF pumping induced plasma cascade lines[J]. Chinese Journal of Radio Science, 2015, 30(3): 463-469. doi: 10.13443/j.cjors. 2014072401. VICKERS H, ROBINSON T, and MCCREA I W. A method for improving plasma temperature estimates from incoherent scatter analysis during artificial ionospheric modification experiments[J]. Journal of Geophysical Research: Space Physics, 2010, 115: A11316. doi: 10.1029/2010JA015606. 王琛, 周晨, 趙正予, 等. 大功率電波加熱電離層中熱自聚焦不穩(wěn)定性的理論研究和數(shù)值模擬[J]. 地球物理學報, 2015, 58(6): 1853-1868. doi: 10.6038/cjg20150602. WANG Chen, ZHOU Chen, ZHAO Zhengyu, et al. Theoretical analysis and numerical simulation of thermal self-focusing instability caused by powerful HF radio waves used in ionospheric heating experiments[J]. Chinese Journal of Geophysics, 2015, 58(6): 1853-1868. doi: 10.6038/ cjg20150602. RIETVELD M T, KOSCH M J, BLAGOVESHCHENSKAYA N F, et al. Ionospheric electron heating, optical emissions, and striations induced by powerful HF radio waves at high latitudes: Aspect angle dependence[J]. Journal of Geophysical Research, 2003, 108(A4): 1141. doi: 10.1029/2002JA009543. HONARY F, STOCKER A J, ROBINSON T R, et al. EISCAT observations of electron temperature oscillations due to the action of high power HF radio waves[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 1993, 55(10): 1433-1448. doi: 10.1016/0021-9169(93)90109-C. -
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