1. 一种伪随机脉冲的快速参数估计方法 - 武汉大学学报( 信息科学版)
一种伪随机脉冲的快速参数估计方法 · 作者简介: 刘伟平,博士,讲师,主要从事卫星精密定轨研究。E-mail:[email protected] · 通讯作者: 郝金明,教授。E-mail:[email protected].
在精密定轨中,附加伪随机脉冲能够很好地弥补力学模型精度不足的问题,然而由于伪随机脉冲数量通常较多,如果利用常规最小二乘方法直接进行参数估计,会严重降低计算效率。针对这一问题,给出了一种基于参数预消除与回代思想的伪随机脉冲参数快速估计方法,实测算例表明,利用本文方法,能够获得与常规最小二乘方法相同的参数估值,但本文方法在计算效率上要明显优于后者。
2. 基于UofC模型的精密单点定位精度分析
介绍基于UofC模型的精密单点定位的基本原理，综合考虑各种误差改正，实现了基于UofC模型的精密单点定位算法。采用静态和多种动态条件下（动态数据来源于陆地、空中和海上 ...
介绍基于UofC模型的精密单点定位的基本原理，综合考虑各种误差改正，实现了基于UofC模型的精密单点定位算法。采用静态和多种动态条件下（动态数据来源于陆地、空中和海上的运动载体）的实测数据进行解算实验并从外符合的角度对算法的定位精度进行评估。实验结果表明：所实现算法的静态定位精度可达到2～3 cm，动态解算精度可达到10～20 cm。
3. BDS/GPS短期ISB建模和预报的Kalman滤波方法 - 测绘学报
张辉, 郝金明, 刘伟平, 于合理, 田英国. A Kalman Filter Method for BDS/GPS Short-term ISB Modelling and Prediction. ZHANG Hui, HAO Jinming, LIU Weiping, YU ...
BDS/GPS短期ISB建模和预报的Kalman滤波方法
4. 附加先验轨道约束的leo几何法实时精密定轨验证分析Demonstration ...
郝金明 焦文海 董明 焦博 刘伟平 提交. 查看相同关键词的文献，请选择： 低轨卫星 几何法定轨 实时 先验轨道约束 精度 提交. 查看与本文具有共同参考文献的文献 提交 ...
查看参考文献21篇
5. 卫星钟差超短期预报模型分析
采用线性模型、二次多项式模型、灰色模型和基于历元间差的二次多项式模型对不同卫星的钟差进行预报分析。结果表明，在超短期钟差预报中，四种方法预报精度相当， ...See AlsoWat is 7x7? De gouden regel voor uw PowerPoint-presentatie21 Most Visited US Conservative News Sites in 2024Facebook Marketplace Charlottesville10 Best Fake Social Media Generators for Web and Mobile - TechWiser
采用线性模型、二次多项式模型、灰色模型和基于历元间差的二次多项式模型对不同卫星的钟差进行预报分析。结果表明，在超短期钟差预报中，四种方法预报精度相当，且均能满足实时精度单点定位的需要。在小样本的超短期预报中，钟差预报的精度与卫星的相关性很小，主要取决于钟差在不同时段内的小尺度变化以及所预报时间的长短。
6. 一种伪随机脉冲的快速参数估计方法
刘伟平, 郝金明, 田英国, 于合理. 一种伪随机脉冲的快速参数估计方法[J]. 武汉大学学报·信息科学版, 2015, 40(11): 1487-1492. LIU Weiping, HAO Jinming, TIAN ...
信息工程大学导航与空天目标工程学院, 河南 郑州, 450001
7. 附加原子钟物理模型的PPP时间传递算法 - 测绘学报
于合理, 郝金明, 刘伟平, 田英国, 邓科. 附加原子钟物理模型的PPP时间传递算法[J] ... Modelling[J]. Advances in Space Research, 2014, 54(9): 1901-1912. [18] ...
In the traditional time transfer algorithms of precise point positioni...
8. 北斗卫星导航系统精密定轨定位分析 - 百度学术
，郝金明，李建文，... - 《测绘学报》 - 2014 - 被引量: 26 · 北斗卫星导航系统精密轨道确定方法研究 · 刘伟平 - 《测绘学报》 - 2016 - 被引量: 5 · 北斗卫星导航系统精密 ...
来自 掌桥科研
9. 武汉大学学报·信息科学版 - - - oalib
全球1°×1°海洋岩石圈有效弹性厚度模型. A 1°×1° Model for Lithospheric Effective Elastic Thickness over Global Seafloor ... 田英国, 郝金明, 陈明剑, 于合理, 衡培深See AlsoTop Instant Funding Prop Firms for 2024: Expert Reviews
OA Library offers high quality and most updated free academic thesis,open access resource covering various fields.It also provides Comprehensive Research Tool.
10. 两种伪距单点定位模型最小二乘解的等价性证明 - 国防科技大学学报
The basic positioning model and single-difference positioning model ... [2]刘伟平, 郝金明, 汪平. 标准单点定位于精密单点定位精度对比研究[J]. 测绘通报 ...
国防科技大学学报 ,国防科技大学学报编辑部, 国防科技大学学报官方网站,国防科技大学学报在线投稿
11. 相同关键词【optical flow motion field model】论文列表-- 中国光学期刊网
乌萌 1,2,3,*郝金明 1付浩 4高扬 2,3. 作者单位. 摘要. 1 信息工程大学地理空间信息学院, 河南郑州450052. 2 地理信息工程国家重点实验室, 陕西西安710054. 3 西安测绘研究 ...
ÅYsÇ ßõ+HîH±Ö^6äð_<' VôJ1 (¿}Îwr©ª&ÀÅEÍîÊå®çÞ¼YÐÓ_.=}öôÍæâÕëËg_ý¶º¸·ºxY.G?ÖÍó¶¨Ï7³ïÛÙ¢þñyÑ>ÿ¾5Ŭ^TÏëÙó¢øS3:þjÿölsùêüìÞÝåççÿõj7>[ýº{øÛêôínr ÍÝÕëW»íêr·<Û½»÷£~'Ç]ë·ú·W¿îƽ¦±ir4®§EñMYÅdr¼=ß¼ýuwvùíƬ°:z°|pdvG"Õ7jé»<ÿ÷¿üí?./^½O4è×ÕÕ£ÕËÝÊǯW¿,?8¾éT¹Ø¯¶ã«É½ëN««Í»ßl~þù·êÁÃ{W=YNÏ7+Lðm7§U£yï!êòÁêôÕ?Þ½[í®¦ûv·?x~.®y9_¾ýt5ºéÓ¬õë÷LR¿·ú,F5¤]õð!ÕOWµ·Sh5TS 3SÔe¨NúÞ áÍþ§«J(Ô· ¿ÍM$jq·æÚS¹4"Õ6.ν!([vQÃTÃ[¸{@×g Ç$¸ÚQÈi\Ò½åw/©ùÝJADjDiĺ=òÈ°ÏSô~Ø·R-P¸æø<¦ÆPúmz¢+4Æ@G?â¸_í´aȾ 7ÕtÙ5ö¢XJj»©êEÛO±´J"ÏbüU£ZyYį$Ýo\m2XÒ@%-fÒ_6Èw´û¡ep úù6Ê+$>cez@b(¤od¸4%i ôX¥Ö7¤mxHjµ8àÃðÔßÎ"ñ ÕZÝLÁ·öZ ôè˨Ð&1ð[ò}ÉóÔc`A?¡@ ©6TS>H(63i ¬áмIRë7¬#¬ ÏÌgÄhçÚ Xȼ¬uAâLÑNüak ëè{ÃG$S(kx2RköÜÉ{þîE#Û!Ã=ÚÛà)?«CUÏÕã~Q N<]éDx I "Øbm"$ 6
12. BDS/GPS短期ISB建模和预报的Kalman滤波方法
张辉，郝金明，刘伟平，等。 BDS/GPS短期ISB建模和预报的Kalman滤波方法[J]. 测绘 ... Modelling and Prediction[J]. Acta Geodaetica et Cartographica Sinica ...
Study of inter-system biases(ISB) is essential for the data processing of multi-constellation precise point positioning(PPP). When establishing BDS/GPS short-term ISB models, as equal-weight least square(LS) fails in taking the different weights of fitting ISB data into consideration, a method based on Kalman filter is proposed for the parameter estimation of ISB modelling, and the variance of fitting ISB data in Kalman filter is adjusted according to the distance between the data time and the forecast time. ISB models are established with ISB data over 7 days and the accuracy and applicability of ISB prediction for the 8th day is verified by static PPP experiments. The analysis result shows that the accuracy of ISB prediction generated by Kalman filter model is 29.7%, 11.5%, 43.5% and 32.0% higher than those generated by LS model at 4 stations, respectively. With the priori constraints of ISB prediction generated by Kalman filter model, the averaged RMS values of static PPP solutions are promoted by 2.7% and 0.9% higher in E and U components than those with priori constraints generated by LS model, and are promoted by 10.6%, 26.3% and 3.4% higher in E, N, U components than those without priori constraints, respectively.
13. 面向兵棋系统的卫星导航对抗行动推演模型研究
18 okt 2022 · ... model and the navigation deduction operation simulation model are ... 王月, 郝金明, 刘伟平, 等. GNSS欺骗干扰效能指标检测方法[J]. 测绘与 ...
Following the increasing reliance on space-based time-space metric of ...
14. 出访及挂职经历 - -上海交通大学机械与动力工程学院
MODELING AND ANALYSIS OF UNCERTAIN STATIC CONTACT CHARACTERISTICS FOR ... 郝金明, 赵勇, 王皓, 盛东义. 薄壁构件镜像加工支撑机构综合刚度的分析与优化[J] ...
上海交通大学机械与动力工程学院
15. [PDF] 利用多模卫星导航系统加快PPP的收敛速度 - 中国科学院
郝金明. ‡. (解放军信息工程大学导航与空天目标工程学院郑州450001). 摘要精密单点 ... In order to accelerate the convergence speed of PPP, the PPP model using ...
16. Research progress and key issues of territory consolidation under the ...
郝庆, 封志明, 赵丹丹, 等. 自然资源治理的若干新问题与研究新趋势. 经济地理 ... 严金明, 夏方舟, 马梅. 中国土地整治转型发展战略导向研究. 中国土地科学, 2016 ...
After nearly 40 years of development, China's territory consolidation has played an important role in promoting rural farmland protection, solving the problem of inefficient use of land resources, and helping poverty alleviation. This article reviews the development process of China's territory consolidation, summarizes relevant research progress based on bibliometric analysis and literature reviews, and puts forward key issues for future territory consolidation research. The following conclusions are drawn: China's territory consolidation undertakings and research have gone through three stages including territory consolidation planning, special territory consolidation projects, and comprehensive territory consolidation. The promotion of rural revitalization is the most important historical task of current territory consolidation. At present, territory consolidation research has formed a distinctive research system with the goal of solving the problem of land space and resource utilization and guided by policy management needs. Land use research is the theoretical support of territory consolidation, with agricultural land consolidation, rural settlement consolidation, comprehensive land consolidation and land-space ecological restoration as the main objects. Territory consolidation research formed a decentralized group consisting of management departments and characteristic scientific research institutes as the core research bodies. The territory consolidation research under...
17. 郝金明多彩人生大道至简 - 北京市政协
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时间：2013-04-15 来源：2013年第4期