The GPS signal tracking algorithm includes a 4-quadrant frequency discriminator of the carrier , an FLL of carrier and a DLL of the code .
GPS信号跟踪算法主要包括载波的四象限鉴频器算法、载波频率锁定环和码的延迟锁定环算法。
Whereas , with more and more fashionable ideas striking the field of FLL , this traditional way of learning seems to be out of date .
然而,随着越来越多的时髦的学习方法对外语学习领域的冲击,人们似乎认为这种传统的学习方法有些落伍。
FLL and PLL extract phase by CORDIC algorithm , and adopt 21-grade pipeline structure , ensuring high extraction accuracy and reducing the circuit delay effectively .
Objective To evaluate the clinical merit of low mechanical index continuous contrast-enhanced ultrasound in the diagnosis of focal liver lesions ( FLL ) for differentiating benign from malignancy .
目的探讨低机械指数连续超声造影技术鉴别肝脏局灶性病变(FLL)良、恶性的应用价值。
Based on analyzing the advantages of PLL and FLL , a new method of carrier tracking , which combining FLL with PLL , is presented in this paper .