Vertical profiling of atmospheric refractivity from ground-based GPS
نویسندگان
چکیده
منابع مشابه
Determination of Vertical Refractivity Structure from Ground-based GPS Observations
The primary scientific objective of this research is to develop GPS sounding techniques for ground based atmospheric refractivity sensing. Atmospheric profiling with GPS from space has been demonstrated (e.g. Rocken et al., 1997). Ground based receivers have been used to determine integrated atmospheric water vapor above a site, but profiling techniques with ground-based GPS observations are st...
متن کاملJoint Inversion of Atmospheric Refractivity Profile Based on Ground-Based GPS Phase Delay and Propagation Loss
In this paper, we present a new estimation of the atmospheric refractivity profile combining the scattering signal (electromagnetic wave propagation loss) and the direct signal (phase delay). The refractivity profile is modeled using four parameters, i.e., the gradient of the refractivity profile (c1, c2) and the vertical altitude (h1, h2). We apply the NSGA-II (Non-dominated Sorting Genetic Al...
متن کاملComparison of atmospheric parameters derived from GPS, VLBI and a ground-based microwave radiometer in Italy
Integrated Precipitable Water Vapor (IPWV) derived from GPS, water vapor radiometer WVR-1100 and RAdiosonde OBservation (RAOB) have been compared for the Cagliari site (Italy) on a seasonal and annual bases. The comparison analysis on estimating IPWV among the three independent techniques (GPS, WVR-110 and RAOB) has shown high accuracy equal to 0.136 cm with a bias of )0.049 cm throughout 1999....
متن کاملUse of GPS Phase Measurements to Improve Vertical Refractivity Profiles in the Boundary Layer
The primary scientific objective of this research is to develop GPS sounding techniques for ground based atmospheric profiling. Atmospheric profiling with GPS from space has been demonstrated (i.e. Ware et al. 1996, Rocken et al., 1997). Ground based GPS receivers have been used to determine integrated atmospheric water vapor above a site (i.e. Rocken et al., 1993), and along the ray paths to G...
متن کاملVertical Gradients of Refractivity in the Mesosphere and Atmosphere Retrieved from GPS/MET and CHAMP Radio Occultation Data
Fine structures in the vertical gradient of the electron density have been retrieved by means of analysis of the amplitude of radio occultation (RO) data in sporadic E-layers (heights interval 85-110 km). Maximum values of the positive gradients 45⋅10, 48⋅10, 25⋅10, 29⋅10 [mkm] are located at levels 92, 105 km (GPS/MET event 0393) and 93.5, 100 km (GPS/MET event 0583). Variations in the vertica...
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ژورنال
عنوان ژورنال: Radio Science
سال: 2002
ISSN: 0048-6604
DOI: 10.1029/2000rs002565