侧音

简要介绍日本静止气象卫星（GMS）的三点测距系统以及侧音测距的基本原理，利用静止气象卫星测距信号进行时间比对同步实验。

TRRR ( Trilateration Rang and Rang Rate ) system of Japanese GMS ( Geostationary Meteorological Satellite ) and the basic principle of the sidetone ranging are introduced briefly in this paper . Some possible applications are also described , especially for time comparison and synchronization .

提出了一种未知调制侧音频率和调制指数时FFT频率引导的算法，推导出了其性能指标的计算公式，并与当前实现方式进行了比较。

The algorithm is proposed for the situation with unknown side-tone frequency and modulation parameters , which performance expression is also given out . At the same time , it is compared with the current implement forms .

一种双载频差侧音相干接收解调方法

A Method of Bi carrier Frequency Difference Sidetone for Coherent Demodulation

一种新型数字化测距侧音产生器

Tone Class A new digitalization distance measurement side - tone generator

消除侧音采用了回波相消技术。

ECH ( Echo Canceller Hybrid System ) is used to remove sidetones .

目前，在航天测距系统中侧音测距技术具有最高的测距精度。

Side tone ranging has the highest accuracy in TT & C ranging system .

本文阐述了侧音测距信号设计，相位跟踪等理论。

This thesis introduces design of side tone range acquisition signal and phase trace theory .

侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。

The unambiguous distance of tone ranging system is limited by the lowest frequency of tone .

本课题主要完成了卫星侧音测距系统中两个方面的研究工作。

The two main subject of the satellite side tone ranging system have been researched in this thesis .

介绍了卫星测控站纯侧音测距系统次侧音提取及相位匹配的一种新方法：基于正交双通道相关原理的数字相关相位估值法。

In this paper , a new approach on side tone acquisition and phase match of TTC station is suggested .

我国现行的测控体系为统一载波测控系统，主要利用多侧音进行测距。

The prevail measuring and controlling system in China is the unified carrier TTC system , mainly used for ranging through multiple side tone .

对于地球同步轨道通信卫星，一个难点是远距离测量的侧音测距系统最大无模糊距离受到侧音信号最低频率的限制，以及卫星在轨道中的精确定点保持。

One of the difficult points for measuring system is that the utmost unambiguous distance is limited by the lowest frequency of tone . Other on orbit satellite accurate station keeping .

分析了目前硬件水平下采用低性能频率源作为数字器件处理时钟时对载波恢复性能和侧音恢复性能的影响，并对分析结论进行了系统验证。

Under the current hardware level , the influence of clocks on the performance of the carrier and side-tone recovery is analyzed when the low capability frequency source is used as the clock source of the digital devices .

针对一个具体的侧音测距系统在初期测距校零时遇到的问题，提出了一种简单易行的标校方法，从而解决了该设备的距离零值标校问题。

Aiming at the questions appearing during a side tone ranging system performing range zero value calibration in the initial period , a simple and easy calibration method is proposed in this paper for solving these questions completely .

侧化音34例，平均年龄13.48岁；

While lateral misarticulation in 34 patients with mean age of 13 . 48 years old ;

无效：仍有引流气体排出，患侧呼吸音弱或消失，胸片肺未复张。

Ineffective : Still had the drainage gas to discharge , contracts the side respiratory murmur weak or vanishing , the X-ray shows the lung re-distension not enough .

两肺分别单肺通时，患侧肺呼吸音较弱或未能听到呼吸音，而健侧肺呼吸音清晰（支气管导管套囊部分或完全阻塞对侧主支气管口引起）。

, lungs were single-lung pass , the ipsilateral lung is weak or can not hear breath sounds breath sounds breath sounds clear and the contralateral lung ( endobronchial tube cuff partial or complete obstruction of the contralateral main bronchus caused by mouth ) .