智能手表电磁噪声自干扰分析方法

Analysis Methods for Electromagnetic Noise Self-interference in Smart Watches

现有移动终端如智能手表的全球定位系统(Global Positioning System,GPS)容易受到其内部电磁噪声自干扰,影响定位速度和定位精度。现有的针对GPS自干扰优化设计方法不够完善,因此对智能手表电磁噪声自干扰机理进行分析,提出分析解决自干扰问题的3种方法,包括噪声传导测试、近场辐射扫描以及电磁场仿真,在一款智能手表上进行自干扰问题的实际分析论证。

The Global Positioning System(GPS) of existing mobile terminals such as smartwatches is vulnerable to self-interference from internal electromagnetic noise, which affects the positioning speed and accuracy. The existing optimization design methods for GPS self-interference are not perfect, so this paper analyzes the self-interference mechanism of electromagnetic noise of smart watches,and puts forward three analysis methods to analyze and solve the self-interference problem, including noise conduction test, near-field radiation scanning and electromagnetic field simulation, and carries out practical analysis and demonstration of the self-interference problem on a smart watch.