导航

Operation along crop row is a basic function of vision navigation for agricultural robot. The complex external factors of working environment in the field, such as existed shadow and weather change etc., make the navigation parameters extracting become more difficult.

完成沿作物行的行走作业是农业机器人视觉导航系统的一个基础功能，但是由于田间环境的复杂性，比如阴影的存在和天气的恶劣变化等外界因素的影响使导航参数的提取变得困难。

Finally, tests of following crop row showed that shadow removal method based on illumination invariant image satisfied real-time requirement of system and improved the robustness of extracting navigation parameters under variable daylight illuminants.

最后，通过作物行跟踪试验表明，基于光照无关图的阴影去除方法不仅满足了导航实时性的要求，而且使农业机器人在光照变化的情况下导航参数提取的鲁棒性有了更大的提高。

The results from the experiment of linear guidance showed that an combination of four parameters "rud","ctr","yau", and "trn" of (2,2,2,7) was a good choice, with an average path deviation of 1.247m. The results from the experiment on waypoint guidance by satellite showed that the first route, from waypoint A to waypoint B, had a good state, with an average path deviation of 1.188m.

测试结果发现：直线导航的较佳状况是rud、ctr、yau和trn四个参数分别为(2，2，2，7)，此时的平均偏移量为1.247公尺；而在卫星导航中，较佳情形则是A、B航点间的第一段路线，平均偏移量仅1.188公尺。

The left and right sides satisfies China and circumjacent area user to be opposite the demand of satellitic navigation system, have systematic group net and test, expand stage by stage for global satellite navigation system.

在2008年左右满足中国及周边地区用户对卫星导航系统的需求，并进行系统组网和试验，逐步扩展为全球卫星导航系统。

In 1970s,people begin to using integrated navigation system in spaceflight and seafaring.

从20世纪70年代以后，人类在航天和航海领域开始运用组合导航系统进行导航。

An autonomous optical navigation scheme for cruise phase is presented in this paper, in which the relative position for probes is based on the star light and body edge data that is measured by star sensor and optical navigation camera respectively.

提出了一种用于探测器在巡航段的自主光学导航方案，该方案利用光学导航相机以及星敏感器，通过测量星光信息以及天体边缘的信息，得出了探测器的相对位置。

The paper focuses on the map design problem of LBS navigation service.the thesis brings forward that placenames can be used for route navigation landmarks according to the toponym"s characteristic and researches the principle and method of toponym cognitive ranking partition, and visualizes the map content by the toponym"s ranking.

本文研究LBS导航服务时的地图设计问题。本文在研究地名特性基础上提出将地名作为路线导航地标，并研究地名认知等级划分的原则、依据和方法。

Problems of the shortest-path algorithm in a transportation network are studied and a transportation simulation model is put forward in which the road grades, the traffic condition and the rules of swerving are abstracted.

1引言自主车辆路径导航系统是智能交通系统的重要研究课题，它要求能够按照存储在其内部的数字地图的拓扑信息，实时的规划出一条全局最优路径用于车辆导航。

In Writer, you can also display the Navigation toolbar by clicking on the small Navigation icon near the lower right-hand corner of the window below the vertical scroll bar, as shown below.

在Writer中，您也可点击窗口垂直滚动条右下角的小导航图标来显示导航工具栏。

There are three OP signals at the frequencies E5a, E5b and E2L1E1 , whereat the signal on E5a is a 10Mcps signal with 50sps data and a Pilot channel.

E5a采用10兆赫，50定位系统和1个导航渠道， E5b也是10兆赫和一个导航渠道，却是250个定位系统数据调制。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。