摘要
为降低某车载导航系统速率计的外购成本,设计了一种低成本速率计。该速率计采用高精度光电编码器,基于差分思想设计了具有较高抗干扰能力的鉴相电路,并设计了相应的机械结构部件,从总体上降低了成本。该速率计通过了环境试验考核,匹配车载导航系统进行了跑车试验验证,试验数据表明该速率计满足某项目车载导航系统的要求。
In order to decrease the cost of velocity meter, which is a part of a vehicle navigation system, a new kind of low-cost velocity meter is designed. This velocity meter includes a high-precision photoelectrical coder, and a corresponding phase demodulation circuit, it also has the characteristic of anti-interference. This meter had been experienced by several field-tests accompanying with the naviga-tion system. The results show that this new velocity meter can meet specific requirements of the navigation system.
出处
《宇航计测技术》
CSCD
2014年第2期37-42,共6页
Journal of Astronautic Metrology and Measurement
关键词
车载导航系统
速度计
光电编码器
鉴相电路
Vehicular nevigation system
Velocimeter
Photoelectric coded disk
Phase discrimi-nation circuit
