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中文摘要：
提出了一种基于中频回放的跟踪通道设计方案.该方案采用两块单口RAM,对中频数据流进行乒乓操作,同时采用可测试性设计(Design For Test,DFT)中扫描逻辑技术,将跟踪通道的寄存器信息扫描存储至本地SRAM,以实现对卫星信号的连续跟踪,达到跟踪通道时分复用的效果.该方案以增加少量SRAM和提高跟踪通道工作时钟频率为代价,大大减少了跟踪通道逻辑资源.该方案在基于ARM+FPGA的硬件平台上验证通过,并在65nm的CMOS工艺下综合,电路规模约合23万逻辑门,相对于传统并行跟踪通道,电路规模减少约44%.
英文摘要：
An Intermediate Frequency (IF) Playback based tracking channel design is presented in this paper .Two single-port RAMs are used for IF ping-pong processing .Meanwhile ,the scan logic technique from DFT (Design For Test) is used for storing register information of tracking channels to local SRAM . The continuous tracking of satellite signals is achieved through the time division multiplex (TDM ) of the tracking channels .The logic resources of tracking channels are reduced significantly at the expense of a small increase of SRAM and the working frequency of the tracking channel .The tracking channel design is implemented and verified on an ARM + FPGA hardware platform ,and synthesized using 65 nm CMOS cell library .The scale of the circuit is about 230 000 logic gates , which is reduced about 44% compared to traditional tracking channel designs .
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