نتایج جستجو برای: ionosphere correlation

تعداد نتایج: 395452  

Journal: :Remote Sensing 2022

Vertical incidence pulsed ionospheric radar (VIPIR) has been operated to observe the polar ionosphere with Dynasonde analysis software at Jang Bogo Station (JBS), Antarctica, since 2017. The JBS-VIPIR-Dynasonde (JVD) provides parameters such as height profile of electron density NmF2 and hmF2, ion drift, tilt in bottomside ionosphere. JBS (74.6°S, 164.2°E) is located cap, cusp, or auroral regio...

1997
P. J. G. Teunissen

In this contribution we analyse in a qualitative sense for the geometry-free model the dependency of the location, the size and the shape of the ambiguity search space on di€erent factors of the stochastic model. For this purpose a rather general stochastic model is used. It includes time-correlation, cross-correlation, satellite elevation dependency and the use of an a priori weighted ionosphe...

2009
A. J. Kliore A. F. Nagy E. A. Marouf A. Anabtawi E. Barbinis D. U. Fleischman D. S. Kahan

[1] Nineteen new radio occultations of the ionosphere of Saturn have been obtained since 2006. Sixteen of these occultations were from midlatitude and high latitudes and thus provided important, new information of the ionosphere for these regions. A high degree of variability in the electron densities were observed, but grouping and averaging the observations as low-, middle-, and high-latitude...

1998
P. J. G. Teunissen

In this contribution we consider the precision of the ̄oated and the ®xed GPS baseline for the case of weighted ionosphere. Canonical forms of the baseline variance matrices are developed for di€erent measurement scenarios. These forms make the relation between the various variance matrices transparent and thus present a simple way of studying their relative merits. It is also shown how these c...

2008
S. E. Pryse E. L. Whittick R. L. Balthazor

Radiotomography provides observations of ionospheric electron density structure on horizontal scales of tens to hundreds of kilometres. Routine measurements over extended periods of time and geographic areas have the potential for parameterising the structure of the polar and auroral ionosphere. Averaged electron densities characteristic of different ionospheric features, locations, local times...

2005
Heng Yang Victor P. Pasko

[1] Comparison of results from a three-dimensional (3-D) finite difference time domain (FDTD) model of Schumann resonances (SR) with a set of classical eigenfrequency and quality factor solutions for laterally uniform spherically symmetric Earth-ionosphere cavity and recent SR observations during solar proton events (SPEs) and X-ray bursts demonstrate the potential and applicability of the FDTD...

1997
P. J. G. Teunissen

In this contribution we consider the popular widelaning technique from the viewpoint of ambiguity decorrelation. It enables us to cast the technique into the framework of the least-squares ambiguity decorrelation adjustment (LAMBDA) and to analyse its relative merits. In doing so, we will provide answers to the following three questions. Does the widelane decorrelate? Does it explicitly appear ...

Journal: :Data Science Journal 2009
Andrew W. Yau H. G. James Paul A. Bernhardt L. L. Cogger G. A. Enno H. Hayakawa E. P. King D. J. Knudsen R. B. Langley R. Rankin R. H. Hum D. D. Wallis A. White

The CASSIOPE Enhanced Polar Outflow Probe (e-POP) is a Canadian small-satellite mission dedicated to the study of polar ion outflows and related magnetosphere-ionosphere coupling processes in the topside ionosphere. Scheduled for launch in 2009, it will carry eight scientific instruments, including imaging plasma and neutral particle sensors, magnetometers, dual-frequency GPS receivers, CCD cam...

2009
A. Townes

Thir report presents a study made of the DSN charged particle calibration requirements. The ejyects of charged particles on navigation and timing systems were reviewed and it was prcposed that a system based upon the Global Positioning System satellites be used to measure the charged particle content of the ionosphere. The system would be required to measure the total electron content of the io...

Journal: :Advances in Space Research 1985

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید