Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Albert J. Westenberg"'
Autor:
George J. Petersen, Albert J. Westenberg, Ben A. Witvliet, Cornelis H. Slump, Mark J. Bentum, Erik van Maanen, Roel Schiphorst
Publikováno v:
IEEE Antennas and Propagation Magazine. 57:120-145
Separate excitation of the characteristic waves in the ionosphere results in two orthogonal propagation channels on the same frequency, which may be used in diversity and multiple-input, multiple-output (MIMO) systems. In this article, a method to me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27d9bdd030a5338d641720db2ac1629e
https://doi.org/10.1109/map.2015.2445633
https://doi.org/10.1109/map.2015.2445633
Autor:
Roel Schiphorst, Erik van Maanen, Cornelis H. Slump, George J. Petersen, Ben A. Witvliet, Albert J. Westenberg, Mark J. Bentum
Publikováno v:
IEEE antennas and propagation magazine, 57(1), 129-146. IEEE
Near Vertical Incidence Skywave (NVIS) communication uses the ionosphere as a reflector to cover a continuous area with a radius of at least 150 km around the transmitter, on frequencies typically between 3 and 10 MHz. In developing countries, in are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b2fb1f6851c86f07e6aba1fe4f9867c
https://doi.org/10.1109/map.2015.2397071
https://doi.org/10.1109/map.2015.2397071
Publikováno v:
IEEE antennas and propagation magazine, 58(6), 29-37. IEEE
An experiment to investigate several characteristics of near vertical incidence skywave (NVIS) propagation (polarization, characteristic waves and their isolation, elevation angles, and radio noise) over a distance of 105 km and at 7 MHz was performe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e5c09b713442095f077f90ff6969ef0
https://research.utwente.nl/en/publications/c0dd79e2-658c-4adb-a15a-43a119556ab4
https://research.utwente.nl/en/publications/c0dd79e2-658c-4adb-a15a-43a119556ab4
Autor:
Albert J. Westenberg, Erik van Maanen, George J. Petersen, Roel Schiphorst, Mark J. Bentum, Ben A. Witvliet, Cornelis H. Slump
Publikováno v:
2014 8th European Conference on Antennas and Propagation (EuCAP), 2797-2801
STARTPAGE=2797;ENDPAGE=2801;TITLE=2014 8th European Conference on Antennas and Propagation (EuCAP)
STARTPAGE=2797;ENDPAGE=2801;TITLE=2014 8th European Conference on Antennas and Propagation (EuCAP)
Near Vertical Incidence Skywave propagation can provide High Frequency (HF: 3-30 MHz) radio coverage in an area of 300 by 300 km without the need for any intermediate infrastructure. It is therefore very well suited for disaster relief communication.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::049318b1df57d41abc34b321a2e6eacb
https://doi.org/10.1109/eucap.2014.6902407
https://doi.org/10.1109/eucap.2014.6902407