| 基于接收机位置信息的GNSS干扰源定位技术 |
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| 引用本文： | 靳睿敏,甄卫民.基于接收机位置信息的GNSS干扰源定位技术[J].全球定位系统,2020,45(1):51-55. |
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| 作者姓名： | 靳睿敏 甄卫民 |
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| 作者单位： | 中国电波传播研究所,山东青岛266107;中国电波传播研究所,山东青岛266107 |
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| 基金项目： | 国家重点研发计划重点专项(2018YFB0505100). |
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| 摘 要： | 全球卫星导航系统（GNSS）目前得到了十分广泛的应用,但是GNSS信号到达地面的功率很低,同时民用信号的格式是公开的,因此极易受到各种无意和人为故意的干扰,会对GNSS定位和授时的精度造成影响．查找和消除干扰源十分重要,目前通用的干扰源查找手段是采用测向设备实现干扰源的交叉定位,但在不知道GNSS干扰源的大致位置时,采用测向设备查找干扰源将耗费很长的时间．如果能够通过提取一些通用接收机的输出量实现干扰源的粗定位,就可以为测向定位提供初始参考位置和大概的查找范围．本文利用几乎所有的通用接收机都能输出的位置信息实现干扰源的粗定位,随着GNSS接收机逼近干扰源,会造成接收机位置信息的丢失,随着GNSS接收机远离干扰源,接收机又会重新获取位置信息,本文利用一定区域内众多受干扰的接收机的位置信息丢失点和位置信息重捕获点来实现干扰源的粗定位．通过仿真验证,分析了该技术的定位误差,仿真结果表明,该方法能够实现GNSS干扰源的粗定位,为进一步准确查找干扰源提供位置参考．
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| 关 键 词： | GNSS干扰 GNSS接收机 位置信息丢失 位置信息重获取 干扰源定位 |
GNSS interference localization technology based on position information of GNSS receivers |
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| JIN Ruimin,ZHEN Weimin.GNSS interference localization technology based on position information of GNSS receivers[J].Gnss World of China,2020,45(1):51-55. |
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| Authors: | JIN Ruimin ZHEN Weimin |
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| Affiliation: | China Research Institute of Radio Wave Propagation,Qingdao 266107, China |
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| Abstract: | GNSS is widely used at present, but GNSS signals are vulnerable to intentional and unintentional interference because of being extremely weak around the earth’s surface and public of the format, which will affect the accuracy of GNSS positioning and timing. It is very important to localize and eliminate the interference source. The common way to localize the interference source is to use the direction finding equipment. However, it will take a long time to localize the interference source when there is no approximate location of the GNSS interference. If the coarse location of interference can be achieved by analyzing the output parameter of general receivers, it can provide the initial reference position and the approximate search range for direction finding equipment. As the GNSS receiver approaches the interference, it loses the position information, but as it is far away from the interference, it gets the position information again. To study the information of position loss and reacquisition of GNSS receivers can realize the interference localization. The simulation results show that the method can realize the localization of GNSS interference source, and provide position reference for further accurate location of interference. |
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| Keywords: | GNSS interference GNSS receiver position information loss position information reacquisition interference localization |
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