角数据的英文
angular data
例句与用法
- The system of radar antenna controller is used to control the movement of radar antenna , which can realize to search , capture , track the targets and transfer the data of radar azimuth angle and high - low angle to computer
雷达天控器系统是用来控制雷达天线的运动，实现对目标的搜索、截获、跟踪，并将天线的方位角和高低角数据传递给计算机。 - Dynamic model of satellite is built up with astronomic method , and a short - arch forecast arithmetic of satellite orbit in short arch with single site is given , which is of high precision when only angle data is available
本文使用了天文方法建立了人造卫星运动的数学模型，给出了一种只使用单站短弧段测角数据对人造卫星轨道进行高精度预测的算法。 - One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5 . 3 demanding ) , then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles . the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero , then to have dynamic huffman coding to the quantized char array which is composed of multiple , wavelet ' s level , datum length , low frequency coefficients and reserved high frequency coefficients . mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system
第一种情况的压缩方法为：采用传统的傅立叶变换把原始信号从时间域变换到频率域，舍弃20次及其以上的高次谐波成分(保证了gb / t14953 ? 93d5 . 3要求) ，然后对保留的直流分量、基波和各次谐波的幅值和相角数据量化后和量化时分别乘以的倍数系数构成一个数组，以字符形式保存，采用静态huffman编码对变换数据进行压缩；采用离散小波变换把原始信号从时间域变换到频率域，然后对分解得到的高频系数进行阈值量化处理，对乘以的倍数系数、小波变换的阶数、小波变换后的低频、各级高频以及原始数据长度、量化后的低频系数以及保留的高频系数大小、位置构成一个数组，以字符形式保存，采用动态huffman编码对这个文件进行压缩。
