| 1. | Hdop - horizontal dilution of precision
水平精度因子 |
| 2. | Adop - attitude dilution of precision
姿态精度因子 |
| 3. | Vertical dilution of precision
垂直几何精度因子 |
| 4. | Time dilution of precision
时差精度因子 |
| 5. | It is also proved that gdop is smaller with differential measurement than pseudo range measurement . in practice , we can use
在实际应用中,可以采用差分方法来减小区域导航系统的几何精度因子数值以提高定位精度。 |
| 6. | In this paper , the gdop ( geometric dilution of precision ) expression of area navigation system is deduced . using the matrix theory the lowest gdop and that gdop is smaller with more navigation stations are proved in theory
本论文推导了区域导航定位系统的几何精度因子,并用矩阵理论对其最小值及其随导航台个数增加而减小进行了证明。 |
| 7. | In the fifth chapter analyses the idgps system for mobile robot . the paper deduces the mathematics modal to estimate the position accuracy of idgps data and to use fuzzy theory according to the hdop and the snr3 to solve the surveying position answer
第五章全面分析了移动机器人idgps系统,利用模糊数学理论,以卫星几何精度因子和信噪比为因素,给出了idgps系统输出数据可信度的模型。 |
| 8. | These analysis is based on a great deal of test . some conclusion is : geometry dilution of precision and the number of satellites can be used to pick out some abnormal points . to group the data according to the vertical dilution of precision can also pick out some abnormal points
通过对ag132大量实验和精度分析，提出了可以通过gps信号接收时的几何精度因子、卫星个数等首先剔除浙江大学博士学位论文摘要一批gps信号中的异常值，然后可以通过垂向的按几何精度因子分组判别法剔除一些异常值。 |
| 9. | By means of establishing the mathematical model of gps integrated navigation system , it studies geometrical dilution of precision ( gdop ) and kalman filter . we simulate them by supplying to some examples . simulation result has shown the practicality of the algorithm
通过建立gps / sins组合系统的数学模型，从几何精度因子gdop的物理意义和卡尔曼滤波对状态估计的基本原理出发，并结合实例的仿真计算结果，讨论了gps / sins组合导航系统定位和测速精度与gdop的关系。 |
