| 基于GPS/BD的高精度授时关键技术研究* |
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| 引用本文： | 崔永俊,黄江鹏.基于GPS/BD的高精度授时关键技术研究*[J].应用声学,2015,23(2). |
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| 作者姓名： | 崔永俊 黄江鹏 |
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| 作者单位： | 中北大学 电子测试技术国家重点实验室,中北大学 电子测试技术国家重点实验室 |
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| 摘 要： |
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| 关 键 词： | GPS BD 授时系统 FPGA |
Research of Key Technologies of High-precision Timing Based on GPS /BD |
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| Institution: | National Key Laboratory For Electronic Measurement Technology,Key Laboratory of Instrumentation Science Dynamic Measurement,Ministry of Education,North University of China,Taiyuan,030051, |
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| Abstract: | Aim at the problem that the precision of the past satellite communication terminal system isn't high, designed a system that can provide accurate and standard PPS and timing information for the testing instrument of precision time, used the idea of high-stability GPS system and high-reliability BD system to design a dual-model redundance system, FPGA and DSP are used as a central control core, combined the key technology of undamaged dual-model timing, the placeholder optimization of BNC and optimizing of PPS model, provided a unified time standard for all kinds of ground testing control equipments to ensure the high-precision synchronization on time among testing control equipments. Testing results show that this system can provide 20ns PPS of the average accuracy for time interval measuring instrument, and the reliability is high. |
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| Keywords: | GPS BD timing system FPGA |
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