Zakharova Liudmila Changes of Scattering Mechanisms in Boreal Forests Under Freezing Conditions by Means of SAR Polarimetry. In: IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, July 28 - August 02, 2019, Yokohama, Japan , С. 3281-3284.
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Аннотация
The paper aims at polarimetric analysis of PALSAR and PALSAR-2 quad-polarimetric data over Canadian boreal forests. Low air temperature in winter in the area leads to decreasing the radar cross-section, changes of scattering matrix properties, and results in confusing classification maps, which are variant in different seasons. The study demonstrates that air temperature is a simple weather parameter correlating with some polarimetric characteristics of a target. The mean daily temperature in the day before observations is found to be more suitable parameter than current temperature. The increasing interval of temperature averaging (2-7 days) does not improve the resulting correlation. Under freezing conditions the dominating scattering mechanism is a surface scattering even for dense forests. Time series of the polarimetric classification parameters alpha angle and entropy gives a possibility to distinguish real surface scattering from temporal one, that is caused by frost.
| Тип объекта: | Доклад на конференции или семинаре (Постер) |
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| Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: | Захарова Л.Н. |
| Подразделения (можно выбрать несколько, удерживая Ctrl): | 302 лаб. радиолокационных методов дистанционного зондирования |
| URI: | http://cplire.ru:8080/id/eprint/7709 |
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