ionospheric scintillation

ionospheric scintillation

(ÿ-on-ŏ-sfe -rik) See scattering.
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A new GNSS Ionospheric Scintillation and TEC Monitor (GISTM) receiver system from Novatel has been released that integrates the company's powerful OEM628 measurement engine with a high-quality, low-phase-noise, oven-controlled crystal oscillator.
618-8 or Crane) - Calculates atmospheric absorption and tropospheric scintillation losses - Loads and displays decoded two line element (TLE) files (SGP4/SDP4 model) - Fast batch processing of up to 500 GEO link budgets - Ionospheric scintillation estimator - Four satellite, ASI calculator within GEO 'bent pipe' link budget modules - Automatic 'Antenna Noise' calculation option - Tabulation of R0.
Under the new agreement, which extends present contract arrangements between the two companies, Veripos will provide their PSVs with a combination of its proprietary VERIPOS Standard and Standard2 GNSS data augmentation positioning services, the latter designed to increase the availability of GNSS observations during periods of local masking, ionospheric scintillation or inadequate GPS geometry; both are capable of providing typical accuracies of 1-2 metres over ranges between 1,000km and 2,000km.
NeQuick model has been utilized, among other uses, by the European Geostationary Navigation Overlay Service (EGNOS) project of the European Space Agency for system assessment analysis and has been implemented in the Global Ionospheric Scintillation Model (GISM) to calculate the background ionosphere (Beniguel, 2004).
Forecasting the occurrence of ionospheric scintillation activity in the equatorial ionosphere on a day to day basis.
Furthermore, ionospheric scintillations cause frequent loss of lock events in GNSS receivers.
For example, monitoring is helpful in distinguishing ionospheric scintillations from a flock of birds roosting on or near a receiving antenna.