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Description: 电离层传播预测程序，广泛运用于军事、民用电离层成波预测-ionospheric propagation prediction procedure, widely used for military, civilian, into the ionosphere wave forecast
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Size: 119781 |
Author: 王立 |
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Description: 关于Logistic回归统计算法的matlab实现，内容包括建模、输出变量预测和预测误差分析。数据来自UCI数据库中的Ionosphere database，有351个统计实例，输出变量是二分类变量，代表电波从电离层反射的好坏情况，共有32个特征值。(压缩包中包含已经处理好的数据)-on Logistic regression algorithm to achieve the Matlab, including modeling, variable output forecast and prediction error analysis. UCI data from the database Ionosphere database, Statistics are 351 examples, and the output variable is two classification variables, representatives from the ionosphere radio reflection of the good and bad, A total of 32 eigenvalue. (Compressed package contains good data already processed)
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Size: 1192600 |
Author: 高 |
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Description: InSAR是一种极具潜力的新型空间大地测量方法，但它也有其固有的限制，特别是受到大气层延迟（对流层延迟、电离层延迟等）、卫星轨道误差、地表状况和时变去相关性等影响，很容易导致InSAR图像解释错误，而InSAR数据本身无法解决所存在的上述问题。而GPS可以精密定位，可以较为精确地确定电离层、对流层参数，是当前应用最广泛的一种空间大地测量手段。-InSAR is a potential new space geodetic methods, but it also has its inherent limitations. in particular by the delay in the atmosphere (troposphere delay, ionospheric delay, etc.), satellite orbit errors, Surface conditions and time-varying correlation to the impact of such very easily lead to wrong interpretation of InSAR image, InSAR data and by itself can not solve the above problems. GPS precision positioning can be more accurately determine the ionosphere, troposphere parameters, is the most widely used as a means of space geodesy.
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Size: 56119 |
Author: 张俊 |
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Description: 电离层传播预测程序，广泛运用于军事、民用电离层成波预测-ionospheric propagation prediction procedure, widely used for military, civilian, into the ionosphere wave forecast
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Size: 119808 |
Author: 王立 |
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Description: 根据GPS观测数据，绘制电离层影像图的VC程序，可应用于气象、航天等领域。-According to GPS observation data, mapping ionospheric image of VC procedures, can be applied in meteorology, aerospace and other fields.
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Size: 45056 |
Author: 顾同止 |
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Description: 该代码为fortran代码，用来计算GPS信号的电离层延迟。用Klobuchar Ionospheric Model计算。-The code for the fortran code, used to calculate the GPS signals in the ionosphere delay. Klobuchar Ionospheric Model calculation used.
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Size: 4096 |
Author: yyb_whu |
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Description: How to use CODE’s Global Ionosphere Maps
fortran语言，有说明书，有源码，有例子-How to use CODE s Global Ionosphere Mapsfortran language, there are brochures, there are source code, there are examples of
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Size: 1384448 |
Author: 黑夜 |
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Description: 台湾国立中央大学太空科学研究所的一篇硕士论文,只要研究了电离层的最大可用频率的预报,文中提出了这种最大频率的预测模式,并将结果与proplab的预测结果相比较,效果比较满意.对研究电离层的同志没是很好的参考资料.-Taiwan National Central University Space Science Institute, a master' s thesis to study the ionosphere as long as the maximum usable frequency of forecasting, this paper presents the maximum frequency of the prediction model and prediction results with the results of the proplab compared the effect of comparison satisfaction. to study the ionosphere comrades are not very good reference.
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Size: 2217984 |
Author: lee |
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Description: gps导航工具包，可用于分析GPS误差，伪距及导航融合算法-This report include the review of
• Principle of Radio Navigation: navigation base on trilateration has been investigated and the over determined Eq. for navigation has been solved.
• GPS Ephemeris Data: for GPS navigation, the position of GPS satellite is very important so the by receiving ephemeris data the position of the satellite is determined.
• GPS Errors: Three different sources of errors in GPS navigation has been investigated (Ionosphere, Troposphere and Satellite clock). Ionospheric Error model is generated base on Parkinson [1] and the Tropospheric Error Model based on Hopfiel model [2].
• Simulation & GPS Toolbox: One of the targets of this work is generating Matlab GPS Toolbox and in one case study the performance of generated toolbox will be verified.
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Size: 1051648 |
Author: guoq |
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Description: 电离层的延迟模型IRI-2001,输入参数为太阳黑子数，可以得到电离层VTEC的值。-Delay model of the ionosphere IRI-2001, the input parameters for the sunspot number, you can get the value of ionospheric VTEC.
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Size: 840704 |
Author: lishuhui |
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Description: 使用维纳分布进行瞬时频率估计用来校正电离层非线性相位污染带来的频带展宽-High-frequency (HF) sky-wave radar
signals propagate to and from the target by means
of the ionosphere. The difficulty in obtaining very
narrow beamwidths at HF, and the long ranges
involved, mean that the signal backscattered from
the ground is often several orders of magnitude
greater than the target echo. To resolve the target,
coherent signal processing techniques are necessary,
detecting the target echo by virtue of the
Doppler shift caused by the target’s radial velocity.
Unfortunately, movement of the ionospheric
layer by which the radar signal has propagated
often causes the clutter spectrum and target to
spread in the frequency domain, rendering
extended coherent integration pointless. The
movement of the ionosphere can be regarded as
producing frequency modulation of the radar
signal, and thus if this modulation can be estimated
the radar signal may be corrected for the ionospheric
contamination. A technique using the
complex argument of the first-order mo
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Size: 615424 |
Author: sunrong |
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Description: 电离层的贝叶斯分类器，使用matlab编程开发，具有正确率高的优点-Ionosphere Bayesian classifier, using the matlab program development, the advantages with the correct rate
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Size: 1024 |
Author: andy |
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Description: 一种基于matlab的用于描述在电离层中进行射线追踪的模型-Based on matlab' s used to describe the ionosphere model for ray tracing
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Size: 10240 |
Author: 刘星 |
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Description: 利用GPS观测文件以及地面站坐标计算电离层中的总电子含量-Files, and ground stations using GPS coordinates calculation observed in the ionosphere total electron content
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Size: 7168 |
Author: 刘鑫 |
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Description: Describe ground wave propagation
Describe space wave propagation
Calculate the approximate radio horizon based on antenna height
Discuss the effects of the ionosphere on sky wave propagation
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Size: 447488 |
Author: wini |
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Description: ionosphere problem solving
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Size: 31744 |
Author: kfkean |
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Description: 电离层拟合算法，包含GPS，北斗数据的加载，预处理-Ionosphere fitting algorithms, including GPS, Compass loading data preprocessing etc.
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Size: 3072 |
Author: 李奇 |
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Description: Estimate tec (total electron content) by least-sqaure adjustment using GPS
dual-frequency code observables. Ionosphere is approximated as the single-
layer model at the height of 350km with local or global tec model.
Satellite/receiver dcbs (differential code biases) are estimated as well
as tec model coefficients.
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Size: 595968 |
Author: tichysu
|
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Description: fortran file ionosphere
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Size: 1024 |
Author: cha
|
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Description: 用于在matlab上计算电离层的电磁场参数(The parameters of the electromagnetic field used to calculate the ionosphere)
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Size: 28672 |
Author: wolfX |
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