Volume 37 Issue 4
Jul.  2017
Turn off MathJax
Article Contents
YANG Ding, FANG Hanxian, WANG Sicheng. Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation[J]. Chinese Journal of Space Science, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403
Citation: YANG Ding, FANG Hanxian, WANG Sicheng. Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation[J]. Chinese Journal of Space Science, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403

Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation

doi: 10.11728/cjss2017.04.403
  • Received Date: 2016-08-30
  • Rev Recd Date: 2017-03-07
  • Publish Date: 2017-07-15
  • Based on the energy conservation equation and electron continuity equation, the Pre-heating Amplitude-Modulated Theoretical Model (PAMTM) of ionospheric current modulated by powerful HF radio waves, is constructed. The oscillations process of ionospheric density in pre-heating period and current in modulation period are analyzed. Moreover, the effects of different background condition on radiation strength of electromagnetic wave in Extremely Low Frequency/Very Low Frequency (ELF/VLF) band are studied in details by use of PAMTM. The results indicate that PAMTM is more effective in the daytime than in the nighttime. It has the largest strength increment in spring and the intensity of pre-heating amplitude at solar maximum is bigger than that of solar minimum. Its intensity increment amplitude at low latitude is stronger than that of middle latitude. Under certain heating conditions (fERP=200MW, fELF/VLF=1kHz), the effect of the PAMTM is the best when the pre-heating time is 10s considering energy loss, and ELF/VLF radiation levels can be improved by 10.00dB.

     

  • loading
  • [1]
    WILLIS J W, DAVIS J R. Radio frequency heating effects on electron density in the lower E region[J]. J. Geophys. Res., 1973, 78(25):5710-5717
    [2]
    GETMANTSEV G G, ZUǏKOV N A, KOTIK D S, et al. Combination frequencies in the interaction between high-power short-wave radiation and ionospheric plasma[J]. JETP Lett., 1974, 20:101-102
    [3]
    BARR R, STUBBE P, KOPKA H. Long-range detection of VLF radiation produced by heating the auroral electrojet[J]. Radio Sci., 1991, 26(4):871-879.
    [4]
    LI Qingliang, YANG Jutao, YAN Yubo, et al. ELF/VLF waves radiated by modulated HF heating ionospheric in mid-latitude and equatorial regions[J]. Chin. J. Radio Sci., 2008, 23(5):883-887
    [5]
    WANG Feng, ZHAO Zhengyu, CHANG ShanShan, et al. Raytracing of extreamely low frequency waves radiated from ionospheric artificial modulation at low latitude[J]. Acta Phys. Sin., 2012, 61(19):199401
    [6]
    PAPADOPOULOS K, CHANG C L, VITELLO P, et al. On the efficiency of ionospheric ELF generation[J]. Radio Sci., 1990, 25(6):1311-1320
    [7]
    VILLASEÑOR J, WONG A Y, SONG B, et al. Compari-son of ELF/VLF generation modes in the ionosphere by the HIPAS heater array[J]. Radio Sci., 1996, 31(1):211-226
    [8]
    MILIKH G M, PAPADOPOULOS K. Enhanced ionospheric ELF/VLF generation efficiency by multiple timescale modulated heating[J]. Geophys. Res. Lett., 2007, 34(20):L20804
    [9]
    MOORE R C, AGRAWAL D. ELF/VLF wave generation using simultaneous CW and modulated HF heating of the ionosphere[J]. J. Geophys. Res., 2011, 116(A4):A04217
    [10]
    COHEN M B, GOLKOWSKI M, LEHTINEN N G, et al. HF beam parameters in ELF/VLF wave generation via modulated heating of the ionosphere[J]. J. Geophys. Res., 2012, 117(A5):A05327
    [11]
    HAO Shuji, LI Qingliang, YANG Jutao, et al. Theory and simulation of ionospheric pre-heating amplitude modulated heating mode[J]. Chin. J. Radio Sci., 2013, 28(2):231-236(郝书吉, 李清亮, 杨巨涛, 等. 电离层预加热幅度调制模式的理论与模拟[J]. 电波科学学报, 2013, 28(2):231-236)
    [12]
    KUO S, SNYDER A, KOSSEY P, et al. Beating HF waves to generate VLF waves in the ionosphere[J]. J. Geophys. Res., 2012, 117(A3):A03318
    [13]
    GUREVICH A V. Nonlinear Phenomena in the Ionosphere[M]. Berlin:Springer-Verlag, 1978
    [14]
    WANG Sicheng, FANG Hanxian, YANG Shenggao, et al. Heating of lower ionosphere by powerful high frequency radio wave[J]. Chin. J. Space Sci., 2012, 32(6):818-823(汪四成, 方涵先, 杨升高, 等. 大功率无线电波加热低电离层[J]. 空间科学学报, 2012, 32(6):818-823)
    [15]
    MENG Xing, FANG Hanxian. Preliminary simulation of heating effects of the lower ionosphere in Nanjing Dis-trict[J]. Chin. J. Geophys., 2014, 57(11):3642-3649(孟兴, 方涵先. 南京地区低电离层加热效应的初步模拟[J]. 地球物理学报, 2014, 57(11):3642-3649)
    [16]
    COHEN M B, INAN U S, PIDDYACHIY D, et al. Magnetospheric injection of ELF/VLF waves with modulated or steered HF heating of the lower ionosphere[J]. J. Geophys. Res., 2011, 116(A6):A06308
    [17]
    PASHIN A B, BELOVA E G, LYATSKY W B. Magnetic pulsation generation by a powerful ground-based modulated HF radio transmitter[J]. J. Atmos. Terr. Phys., 1995, 57(3):245-252
    [18]
    BILITZA D, REINISCH B W. International reference ionosphere 2007:improvements and new parameters[J]. Adv. Space Res., 2008, 42(4):599-609
    [19]
    PICONE J M, HEDIN A E, DROB D P, et al. NRLMSISE-00 empirical model of the atmosphere:statistical comparisons and scientific issues[J]. J. Geophys. Res., 2002, 107(A12):1468
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article Views(1212) PDF Downloads(627) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return