数字化DS/BPSK导航接收机设计与实现  

Design and Realization of a Digital DS/BPSK Navigation Receiver

作　　者：沈锋[1] 文睿[1] 姜利[1] 

机构地区：[1]哈尔滨工程大学,哈尔滨150001

出　　处：《弹箭与制导学报》2007年第2期313-316,319,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：介绍了一种数字化DS/BPSK导航接收机设计方案与实现。该接收机采用了基于FPGA的硬件设计,结合数字信号处理算法完成信号的捕获、跟踪、位置解算。捕获采用大步进串行捕获方案,采用Tong算法判决策略,伪码跟踪采用全数字超前-滞后跟踪环(DDLL),载波跟踪采用全数字Costas环(DPLL),由载波相位提取观测量并进行位置解算。最后对这种设计方案进行了试验。The design and realization of a digital DS/BPSK navigation receiver is introduced in the paper. The FPGA chip and the digital signal processing algorithm are adopted to realize the signal acquisition, tracking and position calculation. A scheme of a larger step and serial acquisition is proposed, and the Tong decision algorithm is applied to the receiver. The DDLL and the DPLL are introduced in order to track the PN phase and the carrier phase separately of the received spread spectrum signal. The distances which comes form the carrier phase tracking loop are used for positioning, Lastly. some experimentation results are proposed in the paper.

关 键 词：DS/BPSK 导航 捕获跟踪 位置解算 

分 类 号：V241.62[航空宇航科学与技术—飞行器设计]