| 引用本文: | 范广腾,李献斌,王建,庹洲慧.基于检测器性能实时评估的欺骗检测融合算法[J].哈尔滨工业大学学报,2020,52(5):165.DOI:10.11918/201812119 |
| FAN Guangteng,LI Xianbin,WANG Jian,TUO Zhouhui.An anti-spoofing method based on evaluating the performance of detectors in real time[J].Journal of Harbin Institute of Technology,2020,52(5):165.DOI:10.11918/201812119 |
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| 摘要: |
| 随着GPS欺骗生成技术的发展,欺骗信号可以在某一些属性上与真实信号保持一致,如到达角、多普勒频移等,此时单独使用某一种欺骗干扰检测方法,将无法有效地对欺骗信号进行检测,而如果采用直接将多种欺骗检测器结果相或的方法,则检测性能将会随着某一种检测器性能下降而下降.针对不同欺骗干扰场景下,检测器检测性能实时变化且先验信息缺失的情况,本文提出性能实时评估的欺骗检测融合算法.该方法通过建立性能误差评价准则,对融合后的检测性能与单个检测器性能进行实时比较,如果发现某一个检测器性能误差超过门限,则在融合过程中剔除该检测器,从而可以保证当一种检测器失效不会影响融合后的整体性能,该方法可以适用于任意数量,任意种类的欺骗检测方法融合,本文针对相位差和载波多普勒方差两种具体的检测方法,给出了工程实现方法.最后通过仿真结果表明,性能实时评估的欺骗检测融合算法与单独检测算法以及传统融合算法相比,具有更高的检测性能和更广的适应能力. |
| 关键词: 卫星导航 欺骗干扰 检测融合 相位差检测 多普勒方差检测 |
| DOI：10.11918/201812119 |
| 分类号:TN967.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(61801503) |
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| An anti-spoofing method based on evaluating the performance of detectors in real time |
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FAN Guangteng,LI Xianbin,WANG Jian,TUO Zhouhui
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(National Innovation Institute of Defense Technology, Academy of Military Sciences, Beijing 100080, China)
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| Abstract: |
| With the development of the GPS spoofing signal generating technology, the spoofing signal can be similar to the authentic signal in such attributes as arrival angle and Doppler frequency, making it difficult to detect the spoofing signal by only employing one spoofing interference detection method. While if directly combining several methods, the detection performance will be decreased when one detector is degraded. Thus, considering that under different deception jamming scenarios, the detection performance of detectors has real-time changes and the priori information is missing, a detection fusion method is proposed in this paper to detect spoofing signals by evaluating real-time performance of detectors. By establishing the evaluation criteria for performance error, the real-time performance comparison between the proposed method and the single detector method was conducted. With this method, the degraded detector will be rejected if the performance falls down below the threshold, which can ensure that when a detector fails, it will not affect the overall performance of the fusion. This method can be applied to the fusion of any number and any kind of deception detection methods. Based on the detection methods of phase difference and carrier Doppler variance, an engineering implementation method is presented in this paper. Finally, simulation results showed that the spoofing detection fusion algorithm for real-time performance evaluation had better deception performance and wider adaptability than one detector and traditional detection fusion algorithms. |
| Key words: satellite navigation spoofing interference detection fusion phase difference detection Doppler variance detection |
