POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG
Subject of Research. This paper presents analysis of the possibility for establishing all-weather pulse laser altimeters for measuring of low altitudes above the sea surface. We proposed special design features which take into account the random nature of the reflective properties and low reflection...
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| Format: | Article |
| Language: | English |
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Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
2018-06-01
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| Series: | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| Subjects: | |
| Online Access: | https://ntv.ifmo.ru/file/article/18124.pdf |
| _version_ | 1818514020938809344 |
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| author | Nguyen Duc Tung Lebedko E.G Nguyen Van Truong |
| author_facet | Nguyen Duc Tung Lebedko E.G Nguyen Van Truong |
| author_sort | Nguyen Duc Tung |
| collection | DOAJ |
| description | Subject of Research. This paper presents analysis of the possibility for establishing all-weather pulse laser altimeters for measuring of low altitudes above the sea surface. We proposed special design features which take into account the random nature of the reflective properties and low reflection coefficient of the water surface. Method. Theoretical analysis and numerical simulation of temporal characteristics of backscattering return and average power reflected from the sea surface were carried out. The method of altitude measuring to the sea surface in conditions of fog and haze is based on the time interval measuring between the emitted pulse drop and the backscattered signal drop when backscattered signal exceeds the certain level.Main Results. A block diagram of pulsed laser altimeter is proposed which makes it possible to measure low altitudes to the sea surface in various meteorological conditions. The ranges of measured altitudes are determined in the clean atmosphere and in the conditions of fog and haze.Practical Relevance. The proposed scheme ensures the navigation of low-flying vehicles above the sea surface under radio interference in all-weather conditions |
| first_indexed | 2024-12-11T00:09:32Z |
| format | Article |
| id | doaj.art-630728dede6d4915865668d5626659bd |
| institution | Directory Open Access Journal |
| issn | 2226-1494 2226-1494 |
| language | English |
| last_indexed | 2024-12-11T00:09:32Z |
| publishDate | 2018-06-01 |
| publisher | Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) |
| record_format | Article |
| series | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| spelling | doaj.art-630728dede6d4915865668d5626659bd2022-12-22T01:28:12ZengSaint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki2226-14942226-14942018-06-0118575876410.17586/2226-1494-2018-18-5-758-764POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOGNguyen Duc TungLebedko E.GNguyen Van TruongSubject of Research. This paper presents analysis of the possibility for establishing all-weather pulse laser altimeters for measuring of low altitudes above the sea surface. We proposed special design features which take into account the random nature of the reflective properties and low reflection coefficient of the water surface. Method. Theoretical analysis and numerical simulation of temporal characteristics of backscattering return and average power reflected from the sea surface were carried out. The method of altitude measuring to the sea surface in conditions of fog and haze is based on the time interval measuring between the emitted pulse drop and the backscattered signal drop when backscattered signal exceeds the certain level.Main Results. A block diagram of pulsed laser altimeter is proposed which makes it possible to measure low altitudes to the sea surface in various meteorological conditions. The ranges of measured altitudes are determined in the clean atmosphere and in the conditions of fog and haze.Practical Relevance. The proposed scheme ensures the navigation of low-flying vehicles above the sea surface under radio interference in all-weather conditionshttps://ntv.ifmo.ru/file/article/18124.pdfsea surfaceimpulse characteristicsreflection characteristicsbackscattering returnscattering phase functionaverage intensityfixing reflected signalall-weather pulsed laser altimeter |
| spellingShingle | Nguyen Duc Tung Lebedko E.G Nguyen Van Truong POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki sea surface impulse characteristics reflection characteristics backscattering return scattering phase function average intensity fixing reflected signal all-weather pulsed laser altimeter |
| title | POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG |
| title_full | POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG |
| title_fullStr | POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG |
| title_full_unstemmed | POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG |
| title_short | POSSIBILITY OF LOW ALTITUDES MEASUREMENT ABOVE SEA SURFACE UNDER CONDITIONS OF HAZE AND FOG |
| title_sort | possibility of low altitudes measurement above sea surface under conditions of haze and fog |
| topic | sea surface impulse characteristics reflection characteristics backscattering return scattering phase function average intensity fixing reflected signal all-weather pulsed laser altimeter |
| url | https://ntv.ifmo.ru/file/article/18124.pdf |
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