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引用本文：

杨平先.无线电测控系统中三元码跟踪双环的研究[J].电讯技术，1998，38（2）：56 - 59. [点击复制]
.A Study on Tracking the Double Loop of a Three Component Code in Radio Measurement and Its Control System[J].，1998，38（2）：56 - 59. [点击复制]

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无线电测控系统中三元码跟踪双环的研究

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摘要:

本文提出了数字遥测信号与模拟图象信与混合的无线电测控系统中用于捕获和跟踪带钟复合码的跟踪双环方案，分析了双环系统的捕获性能，理论分析和实验结果表明，双环系统不仅捕获时间短，而且具有强的抗干扰能力。

关键词: 遥测遥控图象传输跟踪双环无线电测控

DOI：10.3969/j.issn.1001-893X.

基金项目:

A Study on Tracking the Double Loop of a Three Component Code in Radio Measurement and Its Control System

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Abstract:

In this paper, scheme of the double loop tracking system which is used to acquire and track a commpound PN code with a clock component in radio measurement and its control system of digital telemetry codes and image signal mixed transmission is put forward.Acquisitions performance of double loop system is analysed.Theory analyses and experiments have proved that double loop system using a three component code not only has short acquisition time but can resist the high power level interference.

Key words: TTC,Image Transmission,Tracking Double loop,