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| Content Provider | IET Digital Library |
|---|---|
| Author | Jeon, Hyun Cheol Lim, Jong Nam Park, Chan Gook |
| Abstract | This study proposes a modified terrain referenced navigation (TRN) algorithm considering slant range measurement. The TRN estimates a vehicle's position by comparing the measured terrain information with digital elevation map data. A conventional TRN assumes that a vertical range is measured by a radar altimeter and the measurement error exists only in the vertical direction. Recently, many researches have focused on applying the slant range sensor data, such as light detection and ranging or interferometric radar altimeter data to improve the TRN performance. In such cases, not only the vertical error but also the horizontal error components are generated by slant range measurement errors and the effect of these error components increases significantly as the flight altitude and the slant range measurement errors increase. Therefore, a proper TRN algorithm should be considered to estimate the vehicle position in a stable and accurate manner. In this study, a modified extended Kalman filter [EKF]-based TRN algorithm (ETRN) considering the slant range measurement and the corresponding measurement variance is proposed. The proposed algorithm converts the ETRN measuring the slant range to the conventional ETRN measuring the vertical range. Also, the proposed algorithm provides robust and accurate TRN results by accounting for the vertical and horizontal error components generated by the slant range errors. |
| Starting Page | 1208 |
| Ending Page | 1216 |
| Page Count | 9 |
| ISSN | 17518784 |
| Volume Number | 12 |
| e-ISSN | 17518792 |
| Issue Number | Issue 11, Nov (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/12/11 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5170 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2018-07-13 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Accurate TRN Result Computer Vision And Image Processing Technique Conventional TRN Corresponding Measurement Variance Digital Elevation Map Data Filtering Method in Signal Processing Global Positioning System Horizontal Error Component Inertial Navigation System Instrumentation And Technique For Geophysical, Hydrospheric And Lower Atmosphere Research Interferometric Radar Altimeter Data Kalman Filter Light Detection Measured Terrain Information Measurement Error Modified EKF-based TRN Algorithm Modified Sequential Processing Terrain Modified Terrain Navigation Navigation Algorithm Considering Slant Range Measurement Navigation Considering Slant Range Measurement Optical, Image And Video Signal Processing Proper TRN Algorithm Radar Altimetry Slant Range Error Slant Range Measurement Error Increase Slant Range Sensor Data Statistics Terrain Mapping Topography (Earth) TRN Performance Vertical Direction Vertical Error Component Vertical Range |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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