基于CK-CORE处理器的导航SoC设计

Design on Navigation SoC Based on CK-CORE Processor

基于我国自主知识产权的CK-CORE处理器,设计了一款可满足GPS/北斗双模导航定位应用的导航SoC芯片。该芯片采用了一种结合码相位并行和频域并行的捕获算法,并且使用经典的延迟锁定环路(DLL)、频率锁定环路(FLL)和相位锁定环路(PLL)相结合的方法来实现码相位的跟踪以及载波的跟踪。进行芯片测试表明,SoC芯片定位水平误差小于10 m,灵敏度小于-145 dBm,冷启动时间小于48 s。

Based on the CK-CORE processor with Chinese independent intellectual property, the navigation SoC is designed, which can meet the demand of navigation in both GPS and BD mode.The navigation SoC adopts the acquisition algorithm which com-bines code phase parallel and frequency domain parallel.It uses the classical delay locked loop （DLL）,frequency locked loop （FLL） and phase locking loop （PLL） to realize the code phase tracking and carrier tracking.The SoC test results shows that the error of SoC in navigation is less than 10 meters,the sensitivity is less than -145 dBm and the time of its cold start is less than 48 seconds.