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一种高速全数字卫星信号模拟源平台
马力科
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(中国西南电子技术研究所，成都 610036)

摘要:

提出了一种高速全数字卫星信号模拟源的平台实现方案，该方案以在线可编程门阵列（FPGA）和高速模数转换器（DAC）为平台设计核心，采用了DAC与FPGA高速接口设计、并行编码调制设计、数字白噪声生成设计、速率分级设计、DSP接口设计等设计手段，实现了高速编码和并行调制，完成了高速DAC全数字中频信号直接合成、实时宽带信道模拟、超宽带数字高斯白噪声生成等技术的研究与工程实践。

关键词: 卫星信号模拟源高速DAC 高速数字信号直接合成数字高斯白噪声

DOI：

基金项目:

A high-speed digital satellite signal simulator platform

MA Li-ke

()

Abstract:

A highspeed digital satellite signal simulator solution is provided. This solution uses Field Programmable Gate Array(FPGA) and high speed DigitalA nalog Convertor(DAC) as the core framework. DAC to FPGA highspeed interface des ign, parallel encoding and modulated design, digital white noise generation desi gn, data rate graded design, DSP interface design technology are adopted. Highspe ed parallel encoding and modulation are realized. Intermediate Frequency(IF) digi tal signal direct synthesizion, realtime broadband channel simulation and ultrabr oadband digital Gause white noise generation technology are practiced in project.

Key words: satellite signal simulator high speed DAC high speed digital signal direct s ynthesizion digital Gauss white noise