Generation of the Super Small-Scale Artificial Ionospheric Irregularities in the Ionosphere Pumped by High-Power HF Radio Waves

2017 ◽  
Vol 60 (6) ◽  
pp. 450-455 ◽  
Author(s):  
V. L. Frolov ◽  
I. A. Bolotin ◽  
G. G. Vertogradov ◽  
V. G. Vertogradov
2019 ◽  
Vol 59 (6) ◽  
pp. 713-725
Author(s):  
N. F. Blagoveshchenskaya ◽  
T. D. Borisova ◽  
A. S. Kalishin ◽  
T. K. Yeoman ◽  
Yu. A. Schmelev ◽  
...  

1999 ◽  
Vol 17 (4) ◽  
pp. 508-518 ◽  
Author(s):  
E. D. Tereshchenko ◽  
B. Z. Khudukon ◽  
M. O. Kozlova ◽  
T. Nygrén

Abstract. A new method of determining the anisotropy parameters of small-scale irregularities in the ionospheric F region is presented and experimental results are shown. The method is based on observations of amplitude fluctuations of radio waves transmitted by satellites flying above the F region. In practice, Russian navigational satellites are used and both the amplitude and the phase of the received signal is measured on the ground level. The method determines both the field-aligned anisotropy and the field-perpendicular anisotropy and orientation of the spatial spectrum of the irregularities, assuming that the contours of constant power have an elliptic shape. A possibility of applying the method to amplitude tomography is also discussed. Using a chain of receivers on the ground level, one could locate the regions of small-scale irregularities as well as determine their relative intensities. Then the large-scale background structures could be mapped simultaneously by means of ordinary ray tomography using the phase observations, and therefore the relations of small-scale and large-scale structures could be investigated.Key words. Ionosphere (auroral ionosphere; ionospheric irregularities; instruments and techniques)


2014 ◽  
Vol 57 (6) ◽  
pp. 393-416 ◽  
Author(s):  
V. L. Frolov ◽  
I. A. Bolotin ◽  
G. P. Komrakov ◽  
A. V. Pershin ◽  
G. G. Vertogradov ◽  
...  

2004 ◽  
Vol 61 (7-12) ◽  
pp. 1055-1071
Author(s):  
N. N. Gerasimova ◽  
V. G. Sinitsin ◽  
Yu. M. Yampolski

1977 ◽  
Vol 20 (12) ◽  
pp. 1230-1239 ◽  
Author(s):  
A. V. Gurevich ◽  
G. M. Milikh ◽  
I. S. Shlyuger

2016 ◽  
Vol 58 (10) ◽  
pp. 717-728 ◽  
Author(s):  
V. L. Frolov ◽  
E. A. Schorokhova ◽  
V. E. Kunitsyn ◽  
E. S. Andreeva ◽  
A. M. Padokhin

Author(s):  
Elizabeth B. Nadworny ◽  
T. Gary Yip ◽  
Nader Farag

Abstract This experimental study focuses on the enhancement of the heat removal process by modifying the geometry of pin fin heat sinks, while maintaining the same effective heat transfer area. The pins are cut at an angle to reduce the blockage of air flow across the surface. To perform this study, a small scale wind tunnel facility has been designed specifically for testing high power dissipation processors and other ULSI components. The facility is fully automated and controlled by an HP3852A Data Acquisition System interfaced with a 486 based PC computer. The average surface temperature, Reynolds number, Nusselt number and other relevant heat transfer parameters were reduced from the data collected. Results from the study show that a heat sink with an angled trailing edge produces the greatest enhancement of heat removal. The mechanism for the improved heat transfer is the larger temperature gradient across the surface, which is obtained by lowering the minimum temperature on the surface.


2012 ◽  
Vol 49 (1) ◽  
pp. 010002
Author(s):  
陈宝算 Chen Baosuan ◽  
张军勇 Zhang Junyong ◽  
张艳丽 Zhang Yanli ◽  
刘德安 Liu Dean ◽  
朱健强 Zhu Jianqiang

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