电离层

The results show that the potential and the currents in solstice seasons are much different from those in equinox seasons.

在真实的地球主磁场中，我们研究了中性风季节性变化对电离层中电流和电场的影响。

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

Ionosphere can be divided into D layer, E layer and F layer.

电离层又可细分为 D层、E层和F层。

At the low point of the solar cycle, EUV radiation from the sun is weak and the density of charged particles in the F layer of the ionosphere is least.

在太阳周期的低点， EUV 辐射从太阳是微弱的并且密度荷电粒子在电离层的F 层数是最少。

The distribution characteristic of auroral electrojet in AZS, is helpful for the studies of F layer and magnetosphere coupling in polar region and aurora dynamics.

了解了极光电集流在南极中山站的分布特征，有利于极区电离层和磁层耦合及极光动力学的研究。

Double density disc: A floppy disc which can store twice as much information as its single density counter part.

电离层反射电波的能力取决于不同高度上电子密度的正常差别。

The ionospheric conductivity is influenced by solar activities and geomagnetic conditions and has some changes.

电离层电导率在不同的太阳活动和地磁条件下会发生变化。

You can find it in a recent anthology of his lesser-known writings.The Ghost of the Heaviside Layer and Other Fantasies.

最近他的一本鲜为人知的文集《电离层的幽灵及其他奇幻故事集》里面收录了这则故事。

To compensate for the incomplete projection data, polynomial interpolation method is proposed to deduce more projection data from the available ones. Furthermore ,with the Chapman model assumption of electron density distribution, a method to expand the view angle and evalute the projection data under low elevation angle is presented.

本文提出了用多项式插值的方法增加接收站观测数据，并根据对电离层垂直方向Chapman模型的假设，提出了扩展投影角度的方法，以估算观测中无法得到的低仰角投影数据。

By improving and rebuilding the previous mid-latitude model, we extend the model to high latitude and low latitude, respectively. The extension to high latitude mainly includes the effects of convection electric field and particle precipitation. The low-latitude extension primarily takes account of the configuration of magnetic field and interhemispheric coupling.

在对原有中纬电离层模型改造和重建的基础上，将该模型分别向高纬和低纬扩展，模型向高纬的扩展主要考虑了对流电场和粒子沉降的影响，模型向低纬扩展主要考虑了磁场位形、共轭半球的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。