РАСЧЕТ ЗАЩИЩЕННОСТИ СИГНАЛА ТИПА OFDM ОТ ПОМЕХ НЕЛИНЕЙНОГО ПРОИСХОЖДЕНИЯ

The method of calculation of the security OFDM signal from interference nonlinear origin is described in this article. Such method based on the use of a generic method definition products nonlinearity output paths passing electrical signals with complex (non-smooth) instant dynamic characteristics and polyharmonic and / or modulated input action.Рассмотрена методика расчета защищенности сигнала типа OFDM от помех нелинейного происхождения, основанная на использовании универсального метода определения продуктов нелинейности на выходе трактов прохождения электрических сигналов со сложными (негладкими) мгновенными динамическими характеристиками и полигармоническом и/или модулированном входном воздействии

Methodology for generating a global forest management layer

The first ever global map of forest management was generated based on remote sensing data. To collect training data, we launched a series of Geo-Wiki (https://www.geo-wiki.org/) campaigns involving forest experts from different world regions, to explore which information related to forest management could be collected by visual interpretation of very high-resolution images from Google Maps and Microsoft Bing, Sentinel time series and normalized difference vegetation index (NDVI) profiles derived from Google Earth Engine. A machine learning technique was then used with the visually interpreted sample (280K locations) as a training dataset to classify PROBA-V satellite imagery. Finally, we obtained a global wall-to-wall map of forest management at a 100m resolution for the year 2015. The map includes classes such as intact forests; forests with signs of management, including logging; planted forests; woody plantations with a rotation period up to 15 years; oil palm plantations; and agroforestry. The map can be used to deliver further information about forest ecosystems, protected and observed forest status changes, biodiversity assessments, and other ecosystem-related aspects

Global forest management data for 2015 at a 100 m resolution

Spatially explicit information on forest management at a global scale is critical for understanding the status of forests, for planning sustainable forest management and restoration, and conservation activities. Here, we produce the first reference data set and a prototype of a globally consistent forest management map with high spatial detail on the most prevalent forest management classes such as intact forests, managed forests with natural regeneration, planted forests, plantation forest (rotation up to 15 years), oil palm plantations, and agroforestry. We developed the reference dataset of 226 K unique locations through a series of expert and crowdsourcing campaigns using Geo-Wiki (https://www.geo-wiki.org/). We then combined the reference samples with time series from PROBA-V satellite imagery to create a global wall-to-wall map of forest management at a 100 m resolution for the year 2015, with forest management class accuracies ranging from 58% to 80%. The reference data set and the map present the status of forest ecosystems and can be used for investigating the value of forests for species, ecosystems and their services

CALCULATION OF IMMUNITY TYPE OFDM signal from interference non-linear origin

The method of calculation of the security OFDM signal from interference nonlinear origin is described in this article. Such method based on the use of a generic method definition products nonlinearity output paths passing electrical signals with complex (non-smooth) instant dynamic characteristics and polyharmonic and / or modulated input action