Feasibility of using a low-cost inertial measurement unit with centimeter accuracy differential global positioning system |
Posted on:2000-06-30 | Degree:Ph.D | Type:Dissertation |
University:Ohio University | Candidate:Mathur, Navin G | Full Text:PDF |
GTID:1468390014466590 | Subject:Engineering |
Abstract/Summary: | |
Low-cost Inertial Navigation Systems (INS) technology has evolved rapidly over the last decade with the development of less-expensive and higher-accuracy inertial measurement units (IMU). The development in the field of differential GPS (DGPS) has also matured over the past decade to provide reliable centimeter level accuracy in real-time. This dissertation provides a detailed study of the feasibility of using a low-cost IMU with accurate DGPS to achieve higher-accuracy, reliability, and continuity of the position solution.; Detailed INS equations are provided as well as the hardware integration of a low-cost IMU and a centimeter-level DGPS system.; The integrated system was dynamically tested in a van and a DC-3 research aircraft. In the absence of DGPS updates for a period of time of 10 seconds, IMU-derived positions diverged by 5–10 meters for the van tests and by tens of meters for flight tests.; Noise on the IMU-derived position between successive, one-second DGPS position updates was observed to be on the order of a few millimeters for the van tests and one centimeters for the flight tests. |
Keywords/Search Tags: | Low-cost, Inertial, DGPS, Position, Tests |
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