查询词典 navigation

Maritime navigation and radiocommunication equipment and systems - Integrated navigation systems - Operational and performance requirements, methods of testing and required test results

航海海事和无线电通信设备和系统？综合航海系统？操作和性能要求，试验方法和要求的试验结果

Based on the inertial navigation system , the influences of the excursion of the inertial navigation system and the measurement error of the wireless pressure altimeter on the rotation and scale of the real image are quantitatively analyzed in scene matching.

在惯性导航系统中，定量分析了景象匹配过程中惯性导航系统漂移和无线电气压高度表测量误差对实测图的旋转和尺度所造成的影响，引入了对数极坐标变换。

Simulation results show that in the image rotation and scale variation range resulted from the navigation system error and the measurement error of the wireless pressure altimeter, the proposed image matching algorithm can satisfy the accuracy demands of the scene aided navigation system and provide the location error-correcting information of the system.

仿真分析表明，在导航系统误差漂移所引起的图像旋转和气压高度表所引起的尺度变化范围内，该算法能满足匹配准确性的要求，并能有效给出系统的定位误差修正信息。

Considering the microminiaturization tendency of the satellite, a small, cheap and middle precision autonomous navigation system is investigated to reduce the expense of the autonomous navigation, an attitude control method based on the three-axis magnetometer which has the measurement noises is put forward.

为了降低自主导航的成本以顺应当前卫星向微小型化发展的趋势，对小型化、廉价和中等精度的自主导航系统进行了研究。

However, for mediumsized sites, where the main navigation doesn't change, it is common to include the navigation as an external file.

但是，对于主导航不改变的中等规模的站点，往往通过外部文件包含导航。

To address routing planning of the delivery vehicle navigation in logistics, the article based on point-to-point model, improved the fundamental particle swarm optimization in the initial population, the method of population and evolutionary strategy for improvement, put forward the improved particle swarm optimization for vehicle routing point-to-point model problem of navigation in distribution, and verify the validity of the algorithm by simulation tests.

为解决物流配送车辆导航中的路径规划问题，文章以点对点模型为基础，对基本粒子群优化算法在初始种群的产生方法和种群的进化策略方面进行改进，提出适于配送车辆导航中路径规划点到点模型的改进型粒子群优化算法，并通过仿真试验验证算法的有效性。

TomTom Go 910 is an GPS traffic navigation system for automotive and car or simply portable GPS car navigation system.

TomTom公司去910是一个全球定位系统的交通导航系统的汽车和汽车或干脆便携式GPS汽车导航系统。

The use of the compass to make up for the observation of celestial phenomena alone navigation deficiencies, creating a new era of all-weather navigation.

指南针的运用，弥补了仅仅靠观察天象导航的不足，开创了全天候导航的新时代。

The result of simulation indicates ballistic missile INS/GNSS integrated navigation system aided with celestial navigation can substantially improve the naviga...

仿真结果表明：采用天文导航系统对弹道导弹的INS/GNSS组合导航系统进行辅助将大幅度提高导弹的导航精度，具有重要的实际意义。

Main courses: satellite geodesy, error theory and data processing, physical geodesy, space geodetic techniques and applications, imaging and mapping, navigation, celestial mechanics, photogrammetry, digital image processing, pattern recognition, radio communications and navigation , digital and analog circuits, such as optimal control.

主要课程：卫星大地测量学、误差理论与数据处理、物理大地测量、空间测地技术及应用、影像与制图、组合导航、天体力学、摄影测量学、数字图像处理、模式识别、无线电通讯与导航、数字与模拟电路、最优控制等。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。