| 基于嵌入式Linux的综合分析仪软件设计与实现 |
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| 引用本文： | 顾怡祥,何吟,余执钧,陈晓光. 基于嵌入式Linux的综合分析仪软件设计与实现[J]. 计算机应用与软件, 2008, 25(10) |
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| 作者姓名： | 顾怡祥 何吟 余执钧 陈晓光 |
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| 作者单位： | 复旦大学通信科学与工程系,上海,200433 |
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| 摘 要： | 对基于嵌入式Linux,用于测量并分析短波调幅广播发射机音频性能的综合分析仪软件程序进行了设计与实现,给出了测量短波调幅广播发射机音频指标的步骤.详细描述了发射机调幅度,信噪比,频率响应以及谐波失真等指标的测量算法.用Qt图形界面系统绘制频率响应和频谱曲线,引入二次缓存机制减轻图像闪烁,降低系统开销.现场测试结果证明分析仪软件程序达到设计要求.
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| 关 键 词： | 短波调幅发射机 调幅度 信噪比 频率响应 谐波失真 |
SOFTWARE DESIGN AND IMPLEMENTATION OF INTEGRATED ANALYZER BASED ON EMBEDDED LINUX |
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| Gu Yixiang,He Yin,Yu Zhijun,Chen Xiaoguang. SOFTWARE DESIGN AND IMPLEMENTATION OF INTEGRATED ANALYZER BASED ON EMBEDDED LINUX[J]. Computer Applications and Software, 2008, 25(10) |
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| Authors: | Gu Yixiang He Yin Yu Zhijun Chen Xiaoguang |
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| Affiliation: | Gu Yixiang He Yin Yu Zhijun Chen Xiaoguang(Department of Communication Science , Engineering,Fudan University,Shanghai 200433,China) |
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| Abstract: | The software design and implementation of embedded Linux-based integrated analyzer which aims at measuring the audio parameters of AM broadcasting transmitters used in SW band is given.The methods of measuring modulation degree,signal to noise ratio,frequency response and harmonic distortion are described in detail.Qt is adopted to render frequency response curve and frequency spectrum.To avoid flickering and save system resource during the rendering phase,double buffering is introduced.The software design ... |
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| Keywords: | Linux Oss Qt |
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