原文传递
Development of Techniques for Precise Positioning for ODOT Using the Global Positioning System (GPS); Final rept
| 题名： | Development of Techniques for Precise Positioning for ODOT Using the Global Positioning System (GPS); Final rept |
| 作者： | Goad, C. C. |
| 关键词： | Global positioning system; Photogrammetry; Position sensing; Aerial photography; Inertial navigation; Altitude control; Image motion compensation; Position errors; Error correction codes; Kalman filters; Precision; Imaging techniques; Precision(Location); Ohio; Transportation departments |
| 摘要： | This report presents the results of two studies conducted at the Department of Geodetic Science and Surveying in conjunction with the use of GPS in applications for ODOT's Aerial Engineering tasks. The first deals with the implementation of computer code to determine the position of an airplane precisely using signals from GPS. In addition to positioning an airplane with GPS alone, Inertial Navigation System (INS) technology is now at the level where one could consider augmenting GPS with other information. GPS gives excellent positioning information at fairly long intervals in time (one second), while INS does well at much shorter intervals. Thus a review of potential benefits is provided in the second half of this report. A review on INS hardware and typical operation is followed by some numerical analyses that demonstrate the utility of the aiding process for two types of INS: a medium-to-high grade navigation quality INS and a lower accuracy unit. Particular emphasis is placed on unknown accelerometer biases that dominate the short-term INS positioning uncertainty. Several corresponding stages of self-calibration are indicated. Two appendices include the mathematical framework for state-space estimation of the position errors as well as Kalman filtering and smoothing algorithms. Major conclusions deals with improved interpolation of position from discrete evaluation plus handling GPS outages, which can happen due to blackages by tail section and, electrical interferences. |
| 总页数： | 89p |
| 报告类型： | 科技报告 |
相关文献
- Global Positioning System: A Comprehensive Assessment of Potential Options and Related Costs is Needed.
- Orbit Relative Navigation and Proximity Sensing Using a GPS Bi- static Radar.
- Automotive Geolocation Using Wireless Infrastructure in a GPS Denied Environment.
- INS/GPS Integration Architectures.
- Report from the Guidance and Control Panel Working Group 04 on the Impact of Global Positioning System on Guidance and Controls Systems Design of Military Aircraft. Volume I.
- Guidelines for Establishing GPS-Derived Orthometric Heights.
检索历史
应用推荐
