CAJ | 학술논문

依据设备指标基于FFT循环相关算法提出了一种扩频伪码捕获方案.采用相干累加和恒虚警门限设置对方案进行了改进并完成了检测模型的特性分析及周期累加次数的确定,同时基于FP-GA设计了循环相关模块和峰值检波模块的实现框架.仿真分析表明,此方案满足现实需求,具有很强的实用价值.
의거설비지표기우FFT순배상관산법제출료일충확빈위마포획방안.채용상간루가화항허경문한설치대방안진행료개진병완성료검측모형적특성분석급주기루가차수적학정,동시기우FP-GA설계료순배상관모괴화봉치검파모괴적실현광가.방진분석표명,차방안만족현실수구,구유흔강적실용개치.
According to the equipment indexes and based on FFT circulation related algorithm,this paper proposes a spread spectrum Pseudo Noise (PN)code acquisition scheme. Coherent accumulation and Constant False Alarm Rate (CFAR)threshold setting are adopted to improve the scheme. The characteristic analysis of CFAR detection model and choice of times about cyclical accumulation are completed. Implementation frameworks for circulation related module and peak detector module based on Field Programmable Gate Array (FPGA)are designed. Simula-tion and analysis show that the scheme meets practical need and must be of great practical value.