| 摘要: |
| 针对卫星导航转发式欺骗干扰中转发信号存在负延时需求而工程上又无法实现的问题，提出了一种负延时补偿方法。该方法根据预设欺骗位置，通过转发式欺骗干扰延时算法，获得各卫星信号通道所需转发延时量；然后基于接收机钟差最小化原则选取最优的延时修正量添加到所有通道的转发信号中。理论分析和仿真结果表明，该方法不影响接收机的定位结果，消除了负延时无法实现的问题对转发式欺骗干扰的限制。 |
| 关键词: 卫星导航 转发式欺骗干扰 延时算法 负延时 延时修正量 接收机钟差 |
| DOI： |
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| 基金项目: |
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| A negative time-delay correction method for repeater deception jamming signal |
| WANG Haiyang,YAO Zhicheng,FAN Zhiliang,ZHENG Tang |
| () |
| Abstract: |
| For the problem that negative time-delay for repeater signal is required sometimes in repeater deception jamming of satellite navigation and realizing negative time-delay is impossible in engineering,adding time-delay correction to all repeater signal channels for compensation is put forward as a solution. Firstly,according to the preset false position and time-delay algorithm of repeater signal,repeater time-delay of each satellite signal channel is calculated.Secondly,on the basis of minimization principle of receiver clock-offset,an optimal time-delay correction is selected to add into all repeater signal channels. Theoretical analysis and simulation results indicate that the solution has no effect on positioning results of receiver,and therefore eliminates the limit of negative time-delay to repeater deception jamming. |
| Key words: satellite navigation repeater deception jamming time-delay algorithm negative time-delay time-delay correction receiver clock-offset |
