| 摘要: |
| 长PN码的捕获是TDRSS的关键技术之一。特别是码长达到261888的超长码，要求在低信噪比、较短时间内的捕获，一直是一个难题。本文在对PN码的跟踪、PN码捕获的原理进行简述的基础上，给出了一种长PN码并行捕获的设计与实现方案。该方案捕获时间短，抗噪声性能好，便于工程实现。 |
| 关键词: TDRSS 长PN码 并行捕获 扩频 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| Long PN Code Parallel Acquisition Technology |
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| Abstract: |
| Long Pseodo Noise(PN) code detection is one of the key techniques in TDRSS.It is a difficult problem that long codes are required to be detected at low Signal-to-Noise and with little time,especially when the PN code has 261888 chip. In this paper, the theory of PN code detection is introduced, and a scheme of the design and realization of long PN code detection is given,the method is available in real-time implementation. |
| Key words: TDRSS,Long PN code,Parallel acquisition,Spread spectrum, |
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