| 摘要: |
| 介绍了一种基于3RR应测量系统的三通道高精度新型应答机，该应答机采用一路相参、两路非相参的方案。比较了中频调制转发（中转调）和中频混频转发（中转发）两种方案的特点，并对特殊环路设计、多路信道带宽设计和强弱信号增益线性设计等关键技术进行了详细论述。 |
| 关键词: 测量系统 应答机 高精度 锁相环 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:December 26, 2005Revised:July 01, 2006 |
| 基金项目: |
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| Design of a Novel and High Precision Transponder Based on 3RR Instrumentation System |
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| Abstract: |
| This paper describes a novel and high precision three -channel transponder based on 3RR instrumentation system. The scheme of one channel coherent and two channels noncoherent is adopted by the transponder. The characteristics of IF modulation transponded scheme and IF mixed transponded scheme are compared, and some critical technology problemes such as special phase- locked loop, channel band- width, linear gain of great signal and small signal together are discussed in detail. |
| Key words: instrumentation system transponder high precision phase - locked loop |
