Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method
This study investigates the effect of atmospheric refraction, affected by temperature, atmospheric pressure, and humidity, on airborne weather radar beam paths. Using three types of typical atmospheric background sounding data, we established a simulation model for an actual transmission path and a...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2015/407867 |
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| _version_ | 1832559231837929472 |
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| author | Lei Wang Ming Wei Tao Yang Ping Liu |
| author_facet | Lei Wang Ming Wei Tao Yang Ping Liu |
| author_sort | Lei Wang |
| collection | DOAJ |
| description | This study investigates the effect of atmospheric refraction, affected by temperature, atmospheric pressure, and humidity, on airborne weather radar beam paths. Using three types of typical atmospheric background sounding data, we established a simulation model for an actual transmission path and a fitted correction path of an airborne weather radar beam during airplane take-offs and landings based on initial flight parameters and X-band airborne phased-array weather radar parameters. Errors in an ideal electromagnetic beam propagation path are much greater than those of a fitted path when atmospheric refraction is not considered. The rates of change in the atmospheric refraction index differ with weather conditions and the radar detection angles differ during airplane take-off and landing. Therefore, the airborne radar detection path must be revised in real time according to the specific sounding data and flight parameters. However, an error analysis indicates that a direct linear-fitting method produces significant errors in a negatively refractive atmosphere; a piecewise-fitting method can be adopted to revise the paths according to the actual atmospheric structure. This study provides researchers and practitioners in the aeronautics and astronautics field with updated information regarding the effect of atmospheric refraction on airborne weather radar detection and correction methods. |
| format | Article |
| id | doaj-art-a89bc2713b4349b081d0b0b271005b5a |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-a89bc2713b4349b081d0b0b271005b5a2025-02-03T01:30:35ZengWileyAdvances in Meteorology1687-93091687-93172015-01-01201510.1155/2015/407867407867Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction MethodLei Wang0Ming Wei1Tao Yang2Ping Liu3Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, NUIST, Nanjing 210044, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, NUIST, Nanjing 210044, ChinaAtmospheric Sounding Technology Center in Sichuan Province, Chengdu 610072, ChinaAtmospheric Sounding Technology Center in Sichuan Province, Chengdu 610072, ChinaThis study investigates the effect of atmospheric refraction, affected by temperature, atmospheric pressure, and humidity, on airborne weather radar beam paths. Using three types of typical atmospheric background sounding data, we established a simulation model for an actual transmission path and a fitted correction path of an airborne weather radar beam during airplane take-offs and landings based on initial flight parameters and X-band airborne phased-array weather radar parameters. Errors in an ideal electromagnetic beam propagation path are much greater than those of a fitted path when atmospheric refraction is not considered. The rates of change in the atmospheric refraction index differ with weather conditions and the radar detection angles differ during airplane take-off and landing. Therefore, the airborne radar detection path must be revised in real time according to the specific sounding data and flight parameters. However, an error analysis indicates that a direct linear-fitting method produces significant errors in a negatively refractive atmosphere; a piecewise-fitting method can be adopted to revise the paths according to the actual atmospheric structure. This study provides researchers and practitioners in the aeronautics and astronautics field with updated information regarding the effect of atmospheric refraction on airborne weather radar detection and correction methods.http://dx.doi.org/10.1155/2015/407867 |
| spellingShingle | Lei Wang Ming Wei Tao Yang Ping Liu Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method Advances in Meteorology |
| title | Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method |
| title_full | Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method |
| title_fullStr | Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method |
| title_full_unstemmed | Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method |
| title_short | Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method |
| title_sort | effects of atmospheric refraction on an airborne weather radar detection and correction method |
| url | http://dx.doi.org/10.1155/2015/407867 |
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