全弹道全过程动态飞行高密度参数优化存储方法研究  

Research on optimization storage method of high-density dynamic flight parameters in whole trajectory process

作　　者：袁超杰 苏中[1,2] 刘宁 YUAN Chaojie;SU Zhong;LIU Ning(Beijing Information Science & Technology University,Beijing 100192,China;Beijing Key Laboratory of High Dynamic Navigation Technology,Beijing 100192,China)

机构地区：[1]北京信息科技大学,北京100192 [2]高动态导航技术北京市重点实验室,北京100192

出　　处：《现代电子技术》2019年第19期1-5,10,共6页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(61771059);北京市自然科学基金(4172022,3184046)~~

摘　　要：针对全弹道全过程动态飞行参数高密度采样带来的大量数据存储难题,提出一种数字变频采样与数据压缩相结合的优化存储方法。该方法根据全过程飞行参数变化特点将飞行试验划分为5个过程:准备过程、内弹道过程、外弹道过程、落地撞击过程、落地静止过程,通过分析加速度参数、角速度参数、温度参数在各过程的信号特征,利用数字变频采样方法降低各参数在各过程的数据存储量,再对动态变化过程中的非关键数据进行无失真数据压缩,从而进一步降低数据量。最后通过试验数据验证,经过数字变频与数据压缩,加速度参数、角速度参数、温度参数数据存储量大幅降低,各过程数据存储结构也更加合理,通过数据重建,完整还原了试验过程,验证了方法的可行性。In order to solve the problem of big data storage caused by high.density sampling of dynamic flight parameters in the whole trajectory process,an optimization storage method combining digital frequency conversion sampling and data compression is proposed. Firstly,according to the variation characteristics of the flight parameters in the whole process,the flight test is divided into five processes(preparation process,interior trajectory process,exterior trajectory process,landing impact process,landing stationary process). By analyzing the signal characteristics of acceleration parameters,angular velocity parameters and temperature parameters in each process,the digital frequency conversion sampling method is used to reduce the data storage capacity of each parameter in each process,and then the undistorted data compression for the non.critical data in the process of dynamic change is performed to further reduce the amount of data. Finally,the proposed method is verified by the test data. The experimental results show that the storage capacity of acceleration parameter,angular velocity parameter and temperature parameter are greatly reduced by digital frequency conversion and data compression,and the data storage structure of each process is more reasonable. The test process is completely restored by data reconstruction,and the feasibility of the method is verified.

关 键 词：飞行试验 优化存储 数据压缩 全弹道过程 多参数 LZW算法 

分 类 号：TN919.5.34[电子电信—通信与信息系统] TP212.1[电子电信—信息与通信工程]