Ionospheric scintillation is the rapid modification of radio waves caused by small scale structures in the ionosphere. Severe scintillation conditions can prevent a GPS receiver from locking on to the signal and can make it impossible to calculate a position.

2015年7月16日 · Scintillation noise due to the Earth's turbulent atmosphere can be a dominant noise source in high-precision astronomical photometry when observing bright targets from the ground. Here we describe the phenomenon of scintillation from its …

An optical wave propagating through the atmosphere will experience irradiance (intensity) fluctuations, or scintillation, even over relatively short propagation paths. Scintillation is caused almost exclusively by small temperature variations in the atmosphere, resulting in index of refraction fluctuations (i.e., optical turbulence).

In simple terms, twinkling of stars is caused by the passing of light through different layers of a turbulent atmosphere. Most scintillation effects are caused by anomalous atmospheric refraction caused by small-scale fluctuations in air density usually related to temperature gradients.

2024年3月30日 · Ionospheric scintillation is a phenomenon that occurs in the Earth’s ionosphere, a region of the atmosphere that extends from about 30 miles to 600 miles above the Earth’s surface. It is characterized by rapid fluctuations in the amplitude and phase of radio signals passing through the ionosphere.

Ionospheric scintillation is the rapid modification of radio waves caused by small scale structures in the ionosphere. Radiation belts are regions of enhanced populations of energetic electrons and protons surrounding the Earth in space.

Satellite communication refers to any communication link that involves the use of an artificial satellite in its propagation path. Satellite communications play a vital role in modern life. There are over 2000 artificial satellites in use.

2015年6月23日 · Abstract: Scintillation noise due to the Earth's turbulent atmosphere can be a dominant noise source in high-precision astronomical photometry when observing bright targets from the ground. Here we describe the phenomenon of scintillation from its physical origins to its effect on photometry.

Scintillation – Fluctuations in amplitude and phase due to local variations in the refractive index tend to “randomize” signal phase and therefore limits processing techniques used to build the signal (e.g., integration and correlation).

2018年9月27日 · A study now reveals that radio waves can be affected during daytime near Earth’s magnetic equator by abnormal activity in a layer of the electrically charged upper atmosphere called the...