查询词典 GPS

This article has first analyzed the GPS localization navigation principle, in view of its un- voluntary navigation flaw, the analysis has compared the performance of many kinds of assistant navigation system, determined use Dead Reckoning system, composed of electronic compass and milemeter, to complete the auxiliary localization function, when GPS abated. This scheme could get a satisfying short-time precision, and its cost was low.

本文首先分析了GPS定位导航原理，针对其非主动式导航的缺陷，在分析比较了多种辅助导航系统的性能后，采用"电子罗盘+里程计"的DR航迹推算系统来完成GPS失效时的辅助定位，该方案能保证短时精度，且成本低廉。

It dicussed the design of singlechip-based GPS receiver system, also presented the receiving of GPS signal, as well as the extraction methods of each location parameter, ad mainly dicussed hardware system design process, with a detailed design circuit.

讨论了基于单片机的GPS接收系统设计，提出了对GPS全球定位系统定位信息的接收以及对各定位参数数据的提取方法，并主要在系统的硬件设计方面提出了详细的设计流程以及详细的硬件设计电路图。

In order to achieve accurate solutions of ill-conditioned GPS equations with a few observational epochs, the ill-conditioned normal equations of GPS rapid positioning was transformed as a function optimization problem. Then genetic algorithm was used to calculate parameter solutions, which avoided the inversion of coefficient matrix of normal equations.

为准确解算仅有少数几个历元的GPS载波相位观测数据的病态定位方程，将GPS快速定位的病态法方程求解问题转化为一个函数优化问题，应用遗传算法求解病态方程，避免了法方程的求逆运算，从而可以得到参数的近似最优解。

It is necessary to analyze the effects of orbit uncertainty of the low Earth Orbiter on the observation in GPS occultation for atmosphere monitor.

GPS掩星监测大气方法中需要载有GPS接收机的卫星的精密定轨信息，而该卫星的轨道精度对GPS掩星监测大气的效果进行分析是十分必要的。

In the course of determination orbit, the on-board GPS surveying plays a crucial role, that is the quality of the on-board GPS data.

其中对轨道精度起决定性作用的就是星载GPS测量的精度，也就是星载GPS数据的质量。

The main contents of this dissertation are as follows:1 A station orthogonal coordinate system, which is the reference coordinate system for the three-dimension adjustment of observation data of GPS dam deformation monitoring network, has been put forward.

主要包括内容以下：(1)提出了以站心地平坐标系作为GPS大坝三维变形监测网平差的参考坐标系，推导了在该坐标系下GPS大坝三维变形监测网平差的数学模型及公式；采用拟稳平差的方法对GPS大坝三维变形监测网观测数据进行处理。

Previous study shows that GPS precipitable water vapor and local precipitation have close relationship.

该文利用 2 0 0 2年"973"项目安徽GPS外场试验和 2 0 0 0年北京GPS/VAPOR试验积累的资料对GPS遥感的大气可降水量与局地降水之间关系进行了定量分析。

Comparisons between GPS/PWV and radiosonde observations show that GPS/PWV retrieved by above method can have the accuracy of millimeter level.

利用地基GPS技术层析水汽三维分布的前提是获取精确的GPS信号斜路径方向的水汽含量。

The research demonstrates the theoretical and practical significance of wavelet analysis in decomposition and recomposition of GPS data.

利用小波分析工具实施GPS观测数据的小波分解和重组，研究GPS信号噪声的特性，对GPS网数据处理具有较好的指导和实用意义。

The results show that,after considering the Geodi-spheroid separation(the reference ellipsoid and the EGM96 Geoid are used as vertical datum for GPS and SRTM respectively),the height differences between SRTM and GPS are very small.

结果显示，经过大地水准面差距补偿后(GPS和SRTM分别采用参考椭球面和EGM96大地水准面作为高程基准)，SRTM和GPS高程的差异非常小，基本上在0附近波动。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。