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浏览/检索结果: 共9条，第1-9条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Exploring a Moderate Operation Scale in China's Grain Production: A Perspective on the Costs of Machinery Services 期刊论文 SUSTAINABILITY, 2019, 卷号: 11, 期号: 8, 页码: 17 作者:  Xu, Yu;  Xin, Liangjie;  Li, Xiubin;  Tan, Minghong;  Wang, Yahui 收藏  |  浏览/下载：36/0  |  提交时间：2019/09/24 moderate operation scale  farm size  mechanization cost  grain production  China   Inter-provincial Differences in Rice Multi-cropping Changes in Main Double-cropping Rice Area in China: Evidence from Provinces and Households 期刊论文 CHINESE GEOGRAPHICAL SCIENCE, 2019, 卷号: 29, 期号: 1, 页码: 127-138 作者:  Wang, Renjing;  Li, Xiubin;  Tan, Minghong;  Xin, Liangjie;  Wang, Xue 收藏  |  浏览/下载：37/0  |  提交时间：2019/05/23 multi-cropping change  inter-provincial differences  cropping system adaption  accumulated temperature  double-cropping rice area  China   小瓷砖自动包装装置 专利 专利类型: 实用新型, 专利号: CN203512099U, 申请日期: 2014-04-02, 公开日期: 2014-04-02 作者:  沙亚红;  黄敦新;  李令奇;  王文洪;  方国平 收藏  |  浏览/下载：13/0  |  提交时间：2014/07/31 一种用于小瓷砖贴片组的自动取装机 专利 专利类型: 实用新型, 专利号: CN203512098U, 申请日期: 2014-04-02, 公开日期: 2014-04-02 作者:  王文洪;  黄敦新;  李令奇;  沙亚红;  方国平 收藏  |  浏览/下载：14/0  |  提交时间：2014/07/31 一种用于小瓷砖贴片组的自动取装机及取装方法 专利 专利类型: 发明授权, 专利号: CN103552703B, 申请日期: 2014-02-05, 公开日期: 2015-11-18 作者:  王文洪;  黄敦新;  李令奇;  沙亚红;  方国平 收藏  |  浏览/下载：15/0  |  提交时间：2015/11/26 一种用于小瓷砖贴片组的自动取装机及取装方法 专利 专利类型: 发明, 专利号: CN103552703A, 申请日期: 2014-02-05, 公开日期: 2015-11-18 作者:  王文洪;  黄敦新;  李令奇;  沙亚红;  方国平 收藏  |  浏览/下载：24/0  |  提交时间：2014/04/03 Monocular Camera/IMU/GNSS Integration for Ground Vehicle Navigation in Challenging GNSS Environments 期刊论文 sensors basel, 2012 Chu, Tianxing; Guo, Ningyan; Backen, Staffan; Akos, Dennis 收藏  |  浏览/下载：5/0  |  提交时间：2015/11/13 sensor integration  extended Kalman filter  GNSS  strapdown mechanization  computer vision  tightly coupled integration  CALIBRATION  SENSORS  VISION  SYSTEM   Compression ignition engine modifications for straight plant oil fueling in remote contexts: Modification design and short-run testing 期刊论文 Fuel, 2010, 卷号: 89, 期号: 10, 页码: 2925-2938 Basinger, M. 收藏  |  浏览/下载：14/0  |  提交时间：2015/01/28 INS's error compensation on the base of the celestial theodolite (EI CONFERENCE) 会议论文 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China Zhao H.-B.; Guo L.-H. 收藏  |  浏览/下载：59/0  |  提交时间：2013/03/25 In recent years there has been a major upsurge of interest in the integrated inertial navigation system (INS)/celestial navigation system (CNS) as a cost-effective way of providing accurate and reliable navigation aid for civil and military vehicles (ships  aircrafts  land vehicles and so on). One of the disadvantages of INS is its errors will grow unbounded. The CNS can be used to improve position estimation resulting from INS measurement. This paper describes the design of this. An error model developed earlier is used for CNS/INS filter (Kalman filter) mechanization. In CNS  celestial theodolite acquires an image of the sky  recognize the most brilliant stars in the image  creates with them a "constellation"  and searches for this pattern in an on board star catalogue of the observed region to get the precise position and attitude information of vehicles. The Kalman filter method is used to fuse measurement from the system. We can use this information to compensate INS's error. The tests carry out with this system show that system will get accurate navigation information.