Valeurs de position (unités aux dizaines de mille; version us) (A)

It is also observed that during magnetic storm periods the usual increase seen in the h′F at Kodaikanal during sunset hours is considerably sup- pressed and these periods are

For the ®rst time the complete wave propagation vector of TIDs as function of height was derived by using the maximum entropy method in a cross-spectral analysis of EISCAT CP2

real wind profiler data, we have demonstrated that wavelet thresholding is effective in removing ground and intermittent clutter (airplane echoes) from the RWP raw data (I/Q

(1994a) demonstrated that refraction of HF radar waves is very important when inferring the irregular- ity properties from radar measurements; ionospheric refrac- tion strongly

Thus, the difference is expected to be mainly related to the topside ionosphere above 500 km including the plas- maspheric content. Since the plasmaspheric electron con- tent and

So, from the present analysis it is possible to infer intuitively, that the spectra associated with lower detectability and represented by higher filter order may provide a clue to

(1988) proposed two mechanisms for the enhancement of the ratios of the electron densities (at a fixed height) between Ahmedabed (crest station) and Waltair (low latitude station

A technique using FFT and cross-spectral analysis has been developed and applied to TIGER HF radar observations to determine propagation characteristics of medium-scale trav-