| 基于包络分析的空测数据压缩传输 |
| Telemetry Data Compression and Transmission Based on Envelope Analysis |
| 修订日期：2007-04-12 |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 中文摘要: |
| 针对目前遥测设备的通讯能力有限,不能满足地面实时观测的实际问题,本文提出将包络分析应用于飞机飞行试验数据的压缩传输,该方法为空测数据的实时传输提供了一条有效的解决途径.首先通过对空测数据的极值提取、插值及拟合处理获取其包络线,然后求取包络的频谱,再根据采样定理确定其重新采样频率,即可在保证试验数据基本特征和变化规律的前提下,实现数据传输量的减少.通过对一组实际空测振动数据的处理分析,验证了该方法的有效性. |
| 英文摘要: |
| For the problem of telemetry communication can not meet the demand of the real-time observing on the ground, this paper proposes a method which applied the envelope analysis to data compression and transmission of flight tests, it provides an effective way for the real-time transmission of telemetry data. First, by picking up the extreme points, interpolating and fitting, the envelope of the telemetry data is acquired. And then the spectrum of the envelope is calculated and according to the sampling theorem, the re-sampling frequency is decided, which could achieve the reduction of data transmission on the premise of maintaining the basic characteristic and change rule of the data. In the end, through processing and analyzing a group of actual telemetry vibrational data, the efficiency of the method was testified. |
| 李仕云 吴亚锋 王婷 |
| 西北工业大学动力与能源学院,陕西西安710072 |
| 中文关键词: 空测数据处理 包络分析 数据压缩 包络分析 空测 振动数据 压缩传输 Analysis Envelope Based Transmission Data Compression 有效性 验证 处理分析 数据传输 前提 变化规律 基本特征 采样频率 采样定理 频谱 包络线 |
| 英文关键词:telemetry data processing envelope analysis data compression |
| 基金项目: |
| DOI： |
| 引用本文：李仕云,吴亚锋,王婷.基于包络分析的空测数据压缩传输[J].计测技术,2007,27(4):17~19. |
| 关闭 |
|
|
|
