A generalized high performance navigation system is provided using low earth orbit (LEO) satellites.
提供了一种使用近地轨道(LEO)卫星的通用化的高性能导航系统。
However, be aware that the database system has to maintain these indexes and this, particularly for audit logging, slows down the overall performance of process navigation if audit logging is enabled.
但是，应该知道数据库系统必须要维持这些索引，并且该操作，尤其是对于审核的记录来说，在审核记录已启用的情况下会减慢整个系统的性能。
The system - designated the OE-538 - provides high performance, erectable mast-mounted communication and navigation capabilities.
所指定的OE-538系统能够提供高性能、直立桅杆式通信和导航能力。
In the satellite navigation and positioning system, Doppler shift is one of the key problems that may degrade the performance of the satellite receiver.
在卫星导航定位系统中，多普勒频率偏移是影响接收机性能的关键因素之一。
The trajectory plan is a critical technology for vehicle autonomous navigation. And its quality is closely associated with the performance of the whole autonomous navigation system.
路径规划是车辆自主导航的一项关键技术，它的品质关系到整个自主导航系统的性能。
Next, the character of the knowledge in ship navigation performance design is analysed, the knowledge expression method and saving way in expert system and database are discussed too.
跟着分析了船舶航行性能设计知识的特点，讨论了知识在专家系统和数据库中的表达方法和存储方式；
The vehicle moving experiment illustrates that map match and GPS renew arithmetic may improve the performance of navigation system obviously evidently.
车辆行进实验表明：地图匹配和GPS更新算法可以使系统导航性能得到明显改善。
By utilizing communication based on optic bus, the overall performance of system can be improved greatly for integrated navigation systems.
在组合导航系统中，利用光总线进行通信可以极大地提高系统整体性能。
The integrated system can efficiently make use of all information of navigation sensors and effectively improve the performance of the navigation system.
这种组合导航方案可以充分利用各种导航传感器的信息，有效提高导航系统的精度。
The Global Positioning System (GPS) of U. S is a satellite navigation and position system that now has the best performance , the highest precision of position and it is widely applied in everywhere.
美国全球定位系统GPS是目前性能最完善、定位精度最高、应用最广泛的卫星导航定位系统。
In the end, self-propelled vehicle system has good performance in the road detection results and algorithms efficiency, reaches the autonomous navigation experiment results.
最终，自走车系统在道路检测检测结果和算法效率上都有较好的表现，基本达到了自主导航的实验效果。
Simulation and test results of a laser gyro strapdown inertial navigation system show that the improved calibration scheme can increase the calibration accuracy and improve the navigation performance.
仿真和试验对标定编排改进前后的标定精度和导航性能进行了对比，表明改进编排方案可以提高陀螺和加速度计安装误差角标定精度，改善系统导航性能。
Initial alignment is a key technique of INS, which plays an important role in the performance of navigation system.
初始对准是惯性导航系统的关键技术之一，它直接影响惯导系统的导航性能。
If there are more navigational stars, the system performance will be improved more. So the design of the integrated navigation system is successful.
若观测星数增多，则可以大大提高系统性能，表明该组合导航系统设计方案是成功可行的。
Integrated navigation technology can effectively improve the performance of navigation system.
组合导航技术是提高导航系统整体性能的有效途径。
The proposed vibratory gyroscope has a promising prospect for the inertial navigation system with a medium accuracy due to its high performance, small volume and low power consumption.
该陀螺仪性能好、体积小、功耗低，在中等精度的惯性导航系统中有较好的应用前景。
The third step, about 2020, built by more than 30 satellites, global coverage Compass global satellite navigation system, the system performance over the same period the international advanced level.
第三步，2020 年左右，建成由30余颗卫星组成，覆盖全球的北斗全 球卫星导航系统，系统性能达到同期国际先进水平。
Compared with the existent integrated navigation system, the system has little decision-making error, better real-time performance and veracity.
与现有车载导航系统相比，该系统决策误差信息小，具有较好的实时性和准确性。
The SINS and integrated navigation system simulation experiment were conducted, the experimental results show that the built system long time navigation Performance is improved.
对SINS和组合导航系统进行了仿真实验，实验结果表明所建系统的长时间导航性能有一定改善。
Some navigation virtual system which can realize virtual roaming had poor performance about human-machine interaction, some even unable to do man-machine interactive operation.
能实现虚拟漫游的系统人机交互性能也很差，有的甚至无法进行人机交互操作。
Nowadays integrated navigation system based on Kalman Filtering theory has efficiently increased the cost performance ratio.
目前，基于卡尔曼滤波理论设计的组合导航系统有效提高了导航系统的性能价格比。
As the input of the navigation control system, attitude measurement to be high performance, small size and low power is the most important thing.
而姿态测量作为导航控制的输入，如何做到高精度，小体积，低功耗更是无人机研究的一个重中之重。
The distributed system scheme can improve the precision of the system navigation, and enhance the real-time performance of the system.
此设计可提高系统的精度，更好地满足系统实时性要求。
With regard to the scheme of inertial navigation system correction with airborne radar, this paper studies the radar performance requirement in order to meet the correction precision.
针对用机载雷达校正飞机惯导系统的方案，研究为满足校正精度应对雷达性能指标提出的要求。
The performance of the navigation system with a single transponder system operating in the deep sea is considered, and the corresponding methods for the correction of the sound ray bending are given.
考虑了单应答器水声定位导航的深海工作特性，特别给出了相应的声线弯曲修正方法。
The performance of the navigation system with a single transponder system operating in the deep sea is considered, and the corresponding methods for the correction of the sound ray bending are given.
考虑了单应答器水声定位导航的深海工作特性，特别给出了相应的声线弯曲修正方法。
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