المؤلفون: ROBERTS, GETHIN WYN, HANCOCK, CRAIG M., XU TANG

المصدر: GPS World. Jan2019, Vol. 30 Issue 1, p28-35. 8p.

مصطلحات موضوعية: *PERFORMANCE evaluation, NOISE measurement, IONOSPHERIC radio wave propagation, RELIABILITY of artificial satellites, GLOBAL Positioning System, BEIDOU satellite navigation system, GALILEO satellite navigation system

المؤلفون: Hay, Curtis, Wong, Jeffrey

المصدر: GPS World. Jan2000, Vol. 11 Issue 1, p56. 6p. 1 Color Photograph, 2 Charts, 3 Graphs, 1 Map.

مصطلحات موضوعية: TROPOSPHERIC radio wave propagation, METEOROLOGICAL radar stations, GLOBAL Positioning System

مصطلحات جغرافية: COLORADO, UNITED States

المؤلفون: WALTER, TODD¹, BLANCH, JUAN², DE GROOT, LANCE³, NORMAN, LAURA⁴

المصدر: GPS World. Aug2021, Vol. 32 Issue 8, p28-34. 7p.

مصطلحات موضوعية: IONOSPHERIC techniques, IONOSPHERIC disturbances, RADIO wave propagation

المؤلفون: Langley, Richard

المصدر: GPS World. Apr2012, Vol. 23 Issue 4, p44-50. 7p.

مصطلحات موضوعية: IONOSPHERE, GLOBAL Positioning System, IONOSPHERIC radio wave propagation, IONIZING radiation, SOLAR radiation, ARTIFICIAL satellites in navigation

المؤلفون: Langley, Richard

المصدر: GPS World. Apr2012, Vol. 23 Issue 4, p44-44. 2/3p.

مصطلحات موضوعية: IONOSPHERE, GLOBAL Positioning System, SHORTWAVE radio, IONOSPHERIC radio wave propagation, ARTIFICIAL satellites in navigation

المؤلفون: Langley, Richard

المصدر: GPS World. Oct2014, Vol. 25 Issue 10, p56-62. 7p.

مصطلحات موضوعية: GLOBAL Positioning System, IONOSPHERIC research, SCINTILLATION of artificial satellites, IONOSPHERIC techniques, IONOSPHERIC radio wave propagation