简化的压缩采样接收机动态范围和自动增益控制研究  

Research on simplified receiver dynamic range and automatic gain control via compressive sampling

作　　者：张益东 杨文革 程艳合[3] 

机构地区：[1]北京卫星导航中心,北京100094 [2]装备学院光电装备系,北京101416 [3]北京航天飞行控制中心,北京100094

出　　处：《微型机与应用》2017年第20期75-79,共5页Microcomputer & Its Applications

摘　　要：为了有效解决军事卫星通信在跳频信号的超宽带、超高频、高码率、高采样率等方面处理压力的问题,对简化的压缩采样接收机的动态范围和自动增益控制等参数指标进行研究。首先给出了简化的压缩采样接收机的组成结构和参数分析。然后,分析了压缩采样系统ADC动态范围,得出压缩采样的有效量化位数与动态范围的关系。之后,考虑了压缩采样的自动增益控制处理框架并进行分析。最后,结合FH-BPSK跳频信号特性,对压缩采样系统的动态范围和自动增益控制进行仿真分析,结果表明在较好的自动增益控制特性下,基于压缩采样的接收动态范围比传统的接收动态范围性能更优。To effectively solve the processing pressure of UWB communication,ultra high frequency,high code rate and high sampling rate of FH in the military satellite communications and aerospace TT C communication system,the composition and parameter analysis of a simplified compressed sampling receiver are given. Then,the dynamic range of the ADC is analyzed,and the relationship between the effective quantization bit number and the dynamic range is obtained. After that,the automatic gain control processing frame of the compressed sample is considered and analyzed. Finally,the dynamic range and automatic gain control of the compression sampling system are simulated by combining the characteristics of FH-BPSK frequency hopping signal. The conclusion is that under the good automatic gain control characteristic,the receiving dynamic range based on the compression sampling is better than the traditional receiving dynamic range performance.

关 键 词：压缩采样 动态范围 自动增益控制 量化信噪比 重构信噪比 射频增益 

分 类 号：TV911.7[水利工程—水利水电工程] TV914.4