地磁场

地磁场Z分量的年变化

Change annual variation of Z component of geomagnetic field

大同&阳高忻州3次中强地震的地磁场△F异常演变特征

Evolutionary Characteristics of Geomagnetic Field △ F Anomaly of 3 Moderate Earthquakes in Datong Yanggao and Xinzhou

K≥5地磁场扰动事件的分形特征

Fractal feature of magnetic disturbance sequences of k ≥ 5

地磁场H和Z分量月均值的频谱分析

Spectral Analysis for Monthly Means of Geomagnetic H-Com-ponent and Z - Component

设计了一套以FPGA为主控制微处理器的地磁场测量采集存储系统。

Data acquisition system with FPGA microprocessor control is designed for geomagnetic measurement .

华北地区地磁场Z分量长期变化的拟合与预测

Fitting and prediction of secular geomagnetic Z component variations in North China

东亚地磁场的Taylor多项式模型

Taylor polynomial model of the geomagnetic field over East Asia

地磁场Sq的经度效应和UT变化

Longitudinal effects and ut variations of the geomagnetic s_q field

根据Maxwell电磁理论，在地磁场中运动的海水将产生磁场。

According to the Maxwell theory , motion of the ocean waves will generate electromagnetic field .

研究结果表明：1地磁场Z分量从七十年代开始以幂函数形式逐年上升，目前仍在上升中；

The results show : 1.the z component of geomagnetic field increased annually with power series from 1970s , and is increasing at present ;

用曲面Spline方法表示1900～1936年中国（部分地区）地磁场及其长期变化的分布

Distributions of the geomagnetic field and its secular variations expressed by the surface Spline method in China ( a part ) for 1900 ~ 1936

根据极地轨道地磁场变化的特性，利用卫星的姿态角和姿态角速率作为反馈信号，提出了一种采用磁力矩器的比例微分（PD）控制规律设计方法。

Taking into account properties of the geomagnetic field , a new PD magnetic control law using the feedback information of attitude angle and attitude rate is developed .

研究地磁场存在条件下扭转过程中低碳A3钢的弱磁信号变化和金属磁记忆效应。

Changes in weak magnetic signal and metal magnetic memory effects in low carbon A3 steel during torsion are studied .

对大同&阳高、忻州3次中强地震的地磁场总强度△F异常变化的时、空、强进行了总结。

The time , space and intensity of the abnormal change of the geomagnetic total intensity (△ F ) of 3 moder-ate earthquakes in Datong Yanggao and Xinzhou have been summarized in this paper .

利用嘉峪关地磁垂直分量1993-1998年的资料，系统分析了嘉峪关地区地磁场Z分量的年变形态。

We use the documents about the geomagnetic vertical component of Jiayuguan from 1993 to 1998 to comprehensively analyze the annually changed configuration of the geomagnetic Z component in this area .

利用河北省内8个地磁台Z分量绝对值资料，分析了近年地磁场变化特征及规律。

Based on the z component 's absolute value data of 8 geomagnetic observatory in Hebei province , the characters and law of geomagnetic field variation in recent years are analyzed .

提出了利用UKF（UnscentedKalmanFilter）处理地磁场测量数据进行低轨道（LEO）卫星自主定姿的算法。

An autonomous attitude determination algorithm based on Unscented Kalman Filter ( UKF ) for low-Earth orbit ( LEO ) satellite is developed by processing geomagnetic field measurements .

结果表明：地磁低点位移异常与地磁z分量的季节性变化有关，与地磁场的日变幅度有关。

The result shows that the abnormity displacement of the low points of geomagnetic record is related to the seasonal changes of geomagnetic Z component and the daily changes of the geomagnetic field .

广延大气簇射（EAS）中次级带电粒子在地磁场中偏转，影响次级粒子的横向分布。

The deflection of the secondary charged particle trajectories of EAS in the geomagnetic field distorts the lateral distribution of the secondaries .

利用第七代IGRF计算1995.0年中国及邻区地磁场

Geomagnetic field over China and adjacent areas at epoch 1995.0 derived from the seventh generation IGRF

通过对卫星地磁场和微分Riccati方程进行近似处理，给出有外界扰动和结构化摄动圆轨道卫星系统的H∞磁姿态控制规律。

Through the approximate handling of geomagnetic intensity and differential riccati equation , the magnetic attitude H control law of the microsatellite in a circle orbit which has external disturb and the structural perturbation is presented .

利用电流系模型结合地磁场数据很好的研究了sawtooth事件期间电流楔在高纬及中低纬的响应特征。

Using the current system model and ground magnetic data we studied response characteristics at high-latitude and middle / low-latitudes to current wedges during sawtooth injections .

认为6.1级地震前8个月山西北部地磁场△F出现异常，同年9月达高潮。

It is suggested that the anomaly of the geomagnetic field △ F in the north of Shanxi occurred for 8 months before the M6 . 1 earthquake , the high value of the anomaly occurred in September of same year .

研究地磁场环境中矩形传动螺纹受轴向拉伸载荷时表面弱磁信号的变化以及磁记忆（MMM）效应。

The weak magnetic signals changes and metal magnetic memory ( MMM ) effects of rectangular screw thread under excitation of geomagnetic field were studied .

本文介绍一种无内屏蔽组件的CPT，它既降低了CPT的成本，又不影响CPT的品位，还能满足全球地磁场的兼容性。

In this paper we introduce a CPT without shield , which can both reduce cost and keep in high quality . Yet it is capable of satisfy the compatibility of global geomagnetic-field .

地磁场的平静日变化（Sq）相对稳定，可由周期分别为24h、12h、8h、6h的四次谐波拟合出来，它是非平稳信号，更加适合用经典功率谱估计方法进行频谱特征分析。

The quiet daily variation field is relatively stable , which can be fitted out with four harmonic waves whose periods are 24 hours , 12 hours , 8 hours and 6 hours respectively .

利用第10代国际参考地磁场模型（IGRF）的资料，研究了地磁位的谐波振幅的纬度分布及其时间变化。

Using the 10th International Geomagnetic Reference Field ( IGRF ) models , the latitudinal distribution of harmonic amplitude and its time-variation of geomagnetic potential are investigated .

以地磁场强度矢量的模为观测量，将Unscented卡尔曼滤波（UKF）用于近地卫星的磁测自主导航。

The unscented Kalman filter ( UKF ) was applied for geomagnetism autonomous navigation in LEO satellite in this paper when the magnitude of the geomagnetic field vector was served as observed value .

实测结果表明，由于离开铁路300m以远的环境磁场受地磁场日变化的影响已经无法直接准确获得，因此用理论方法计算显得十分重要。

The result indicates that , due to the diurnal variation of the geomagnetic field , the environmental magnetic field is hard to be measured directly at the distance of more than 300m away from the railway .

用国际参考地磁场模型（IGRF）分析了地磁场能量在地球内部的分布及其长期变化。

The eighth generation of the International Geomagnetic Reference Filed ( IGRF ) is used to study distribution of geomagnetic energy in the Earth 's interior and its secular variations .