电离层中小尺度扰动的多频多普勒快速探测与分析

贺德江; 朱正平; 蓝加平; 宁百齐; 胡连欢

doi:10.11728/cjss2017.02.158

电离层中小尺度扰动的多频多普勒快速探测与分析

doi: 10.11728/cjss2017.02.158

1. 中南民族大学电子信息工程学院武汉 430074;
2. 中国科学院地质与地球物理研究所北京 100029

基金项目:

国家自然科学基金项目资助（41474135，41127003，41134120）

详细信息

作者简介:
朱正平,E-mail:zpzhu2007@sina.com

中图分类号: P352
计量
- 文章访问数: 907
- HTML全文浏览量: 76
- PDF下载量: 996
- 被引次数: 0
出版历程
- 收稿日期: 2016-01-14
- 修回日期: 2016-04-27
- 刊出日期: 2017-03-15

Multi-frequency Doppler Fast Detection and Analysis of Meso-micro Scale Ionospheric Disturbances

1. College of Electronics and Information Engineering, South-Central University for Nationalities, Wuhan 430074;
2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

摘要

摘要: 电离层反射回波的高频多普勒频移测量是研究电离层扰动的重要方法之一.利用基于单频信号相位变化率测量的实时探测方法，获取连续高精度多频多普勒频高图，以实现中小尺度电离层扰动的快速探测研究.该方法被应用于敏捷式高性能电离层无线电多频探测系统样机平台.经验证在该平台上获取的多普勒频移分辨率可达0.039Hz，频高图探测周期最短小于1min.基于这种快速探测方法和平台在武汉观测站进行了较长时间的观测和数据采集，获得高精度多普勒频移并反演出电子浓度等值面法向运动速度，得到电离层反射寻常波的多普勒频高图和垂直扰动速度等信息，进而推演出电离层扰动随时间和空间的实时变化特征.对这些时域信号进行频谱分析，初步结果显示这些扰动主要是由极区活动激发的中国中部地区冬季出现率较高的中尺度TID.此外，对三种常用的电离层扰动反演分析方法进行了对比研究，结果显示电离层扰动的变化趋势基本一致，说明观测数据和研究方法可靠稳定，为多频多点电离层扰动的传播特性观测研究提供了基础.
- 电离层中小尺度扰动 /
- 快速探测 /
- 多频探测系统 /
- 多普勒频移 /
- 电子浓度等值面法向运动速度
Abstract: Measuring the HF Doppler frequency shifts of ionospheric echoes is one of the important ways to study ionospheric disturbances. We use the real-time detection method based on measuring the phase-change rate of single frequency signals, and obtain continuous high-precision multi-frequency Doppler ionograms to achieve fast detection and study of meso-micro scale ionospheric disturbances. This method is applied to the multi-frequency detection system which is jointly developed by the Chinese Academy of Sciences and South-Central University for Nationalities. It is verified that the Doppler resolution obtained from this platform can be up to 0.039Hz and the minimum ionogram period is less than 1 minute. We collect a long-time raw data of the ionosphere based on this new detection method and platform in Wuhan observatory. Through the way of acquiring high-precision Doppler frequency shifts and the method of inversing the normal velocity of electron concentration isosurface, the Doppler ionograms and vertical disturbed velocity of O waves are obtained. Furthermore, the real-time changes of ionospheric disturbances with time and space are deduced. By the spectrum analysis on these time domain signals, preliminary results show that these disturbances are mainly mesoscale TIDs motivated by the Polar activities which often appear in winter in central China. This paper also compares the three commonly used inversion methods. The results show that the ionospheric disturbances have almost the same change trends. It indicates that the observation data and the research methods are reliable and stable, which provides an important basis for observing and researching the multi-frequency and multi-point propagation characteristics of ionospheric disturbances.
- Meso-micro scale ionospheric disturbances /
- Fast detection /
- Multi-frequency detection system /
- Doppler shift /
- Normal velocity of electron concentration isosurface

HTML全文

参考文献(22)

[1]	DAVIES K. Ionospheric Radio[M]. London:Peter Peregrinus Ltd., 1989
[2]	BERTEL L, GUYADER P. Multiple frequency Doppler sounding of the ionosphere theory and experimental comparision with incoherent scatter results[J]. Radio Sci., 1984, 19(1):879-890
[3]	FRIDMAN S V, NICKISCH L J, AIELLO M, HAUSMAN M. Real time reconstruction of the three-dimensional ionosphere using data from a network of GPS receivers[J]. Radio Sci., 2006, 41(5):RS5S12. DOI: 10.1029/2005RS003341
[4]	FRIDMAN S V, NICKISCH L J, HAUSMAN M. Inversion of backscatter ionograms and TEC data for over-the-horizon radar[J]. Radio Sci., 2012, 47(2):RS0L10. DOI: 10.1029/2011RS004932
[5]	CHILCOTE M, LABELLE J, LIND F D, et al. Detection of traveling ionospheric disturbances by medium-frequency Doppler sounding using AM radio transmis-sions[J]. Radio Sci., 2015, 50(3):249-263
[6]	LI Jun. Doppler frequency shifts of a HF radio wave caused by the ionospheric acoustic-gravity waves[J]. Chin. J. Geophys., 1983, 26(1):1-8(李钧. 电离层声重波引起的高频多普勒频移[J]. 地球物理学报, 1983, 26(1):1-8)
[7]	WAN Weixing, LI Jun. Spectral behaviour of TIDs detected from rapid sequence ionograms[J]. J. Atmos. Terr. Phys., 1992, 55(1):47-55
[8]	YUAN Zhiguang, NING Baiqi, WAN Weixing. Acquisition and analysis of Doppler ionogram with high precision[J]. Chin. J. Space Sci., 2002, 22(3):234-239(袁志刚, 宁百齐, 万卫星. 高精度多普勒频高图的获取和分析[J]. 空间科学学报, 2002, 22(3):234-239)
[9]	YUAN Zhigang, NING Baiqi, WAN Weixing, YUAN Hong. Acquirement and analysis of Doppler ionograms with high accuracy in the ionogram mode from Digi-sonde 256[J]. Radio Sci., 2004, 39(2):RS2021. DOI: 10.1029/2002RS002779
[10]	YUAN Zhigang, NING Baiqi, LIU Libo, WAN Weixing, ZHAO Biqiang. A new method for determining the meridional wind velocity during an ionospheric storm[J]. Geophys. Res. Lett., 2003, 30(6):1290. DOI: 10.1029/2002GL016469
[11]	ZHU Zhengping, NING Baiqi. Time domain method for HF Doppler frequency shift with high precision in ionospheric vertical sounding[J]. J. South-Central Univ. Natl.:Nat. Sci. Ed., 2007, 26(3):40-42(朱正平, 宁百齐. 电离层高精度高频多普勒频移参量的时域探测方法[J]. 中南民族大学学报:自然科学版, 2007, 26(3):40-42)
[12]	CHEN Kun, ZHU Zhengping, NING Baiqi, et al. Deve-loping a new mode for observation of ionospheric disturbances by digital ionosonde in ionospheric vertical sounding[J]. Radio Sci., 2012, 47(3):RS3009. DOI:10. 1029/2011RS004968
[13]	WAN Weixing, LI Jun. Inverting ionospheric movement and structural height profile by the reflected echoes of HF radio waves[J]. Chin. J. Space Sci., 1987, 7(2):85-93(万卫星, 李钧. 由高频无线电波反射回波参数反演电离层运动和结构的高度剖面[J]. 空间科学学报, 1987, 7(2):85-93)
[14]	WAN Weixing, LI Jun. HF radio diagnostics of the ionospheric AGW disturbance[J]. Chin. J. Geophys., 1989, 32(6):609-620(万卫星, 李钧. 电离层声重波扰动的高频无线电诊断[J]. 地球物理学报, 1989, 32(6):609-620)
[15]	ZHANG Zhaoming, ZHU Gangkun. Using high resolution Dopplionogram observe and analyze ionospheric disturbances[J]. Chin. J. Geophys., 1988, 31(2):121-127(张兆明, 朱岗崑. 利用高分辨率多普勒频高图观测和分析电离层扰[J]. 地球物理学报, 1988, 31(2):121-127)
[16]	LONG Xianling, HOU Jiechang. On the frequency variation of radio waves reflected from the ionosphere[J]. Chin. J. Geophys., 1979, 22(4):387-395(龙咸灵, 侯杰昌. 关于电离层反射电波频率变化的问题[J]. 地球物理学报, 1979, 22(4):387-395)
[17]	APOSTOLOV E M, ALTADILL D, ALBERCA L F. Characteristics of quasi-2-day oscillations in the f₀F₂ at northern middle latitudes[J]. J. Geophys. Res., 1995, 100(A7):12163-12171
[18]	WAN Weixing, YUAN Hong, NING Baiqi, LI Jun. Time and space scale statistic analysis of ionospheric disturbances in central China[J]. Chin. J. Space Sci., 1995, 15(4):301-306(万卫星, 袁洪, 宁百齐, 李钧. 我国中部地区电离层扰动时空尺度的统计分析[J]. 空间科学学报, 1995, 15(4):301-306)
[19]	GALUSHKO V G, PAZNUKHOV V V. Incoherent scatter radar observations of AGW/TID events generated by the moving solar terminator[J]. Ann. Geophys., 1998, 16(7):821-827
[20]	TITHERIDGE J E. Periodic disturbances in the ionosphere[J]. J. Geophys. Res., 1968, 73(1):243-252
[21]	GOE G B. Jet stream activity detected as wavelike disturbances at mid-latitude ionospheric F region height[J]. Pure Appl. Geophys., 1971, 92(1):190-206
[22]	KENNETH J W L. Ionosphereic observations made by a time-interleaved Doppler ionosonde[J]. Adv. Space Res., 2008, 42(7):1218-1230