Essays about: "satellite"

Showing result 1 - 5 of 725 essays containing the word satellite.

  1. 1. Spatiotemporal changes in Gothenburg municipality's green space, 1986 to 2019

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Kristin Blinge; [2021-04-01]
    Keywords : NDVI; multitemporal change analysis; incremental change; urbanization;

    Abstract : As the world’s population is becoming increasingly more urban the infrastructure expands toaccommodate the inhabitants’ needs. In a dense urban environment green space has animportant function since it provides vital ecosystem services, contributes to recreational andcultural values and is essential for biodiversity. READ MORE

  2. 2. Effects of modified river cross-section geometry on hydraulic modelling performance: the slope break method

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Feixiong Qu; [2021]
    Keywords : ;

    Abstract : Remote sensing data has been widely used for large scale hydraulic modelling in the world. One of the most common ways to collect remote sensing data is by satellite. The digital elevation data observed from space is publicly accessible and covers almost all areas of the earth. However, the satellite cannot observe the river bathymetry. READ MORE

  3. 3. Spatio-temporal drought characteristics in the Limpopo basin from 1918 to 2018 - A case study based on analysis of the Standardized Precipitation Evaporation Index (SPEI)

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Sandra Domingos Sambo; [2021]
    Keywords : rdought; Standardized Precipitation Evapotranspiration Index; Limpopo River basin; Normalized difference vegetation index; Mann-Kendall Test; Correlation analysis; Earth and Environmental Sciences;

    Abstract : The identification of the characteristics of drought are of great importance in water resources planning and management. This study explored the characteristics of drought at Limpopo River Basin (LRB) from 1918 to 2018. READ MORE

  4. 4. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Oscar Suneson; [2021]
    Keywords : fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Abstract : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. READ MORE

  5. 5. Effects of water-vapor on the Ka/Q band Earth-space radio propagation channel

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Joar Marchner Brandt; [2021]
    Keywords : Attenuation Alphasat Water-vapor Oxygen Cloud ITU Budapest;

    Abstract : A higher frequency radio channel both increase the possible data rate and de- crease the required antenna size to efficiently transmit data. Higher frequency also introduce larger weakness to signal loss due to atmospheric effects. Al- phasat satellite conduct experiments for future use of higher frequencies by the Aldo Paraboni Payload. READ MORE