Издательство Wiley по журналам "Radio Science"
Отображаемые элементы 120 из 379

(196901)In this paper, an unbounded, collision‐free magnetoplasma of one species is analyzed by applying linearized theory. Modifications on the cold plasma dispersion surfaces due to the temperature effect are indicated by typical ...

(197402)The main characteristics of the atmospheric tides observed at St. Santin and Garchy are examined and compared. It is found that the semidiurnal tide is very variable in the meteoric range (80 to 100 km) and more regular ...

(197111)A comparison is given of Keller's method, renormalization techniques, and approximations commonly employed in obtaining approximate solutions to the exact Dyson equation for the coherent field. It is shown that the Dyson ...

(196909)A study of the occurrence frequency of equatorial Es (Esq) and daytime blanketing Es at Ibadan (dip 6°S) and Zaria (dip 3°N) in Nigeria is presented. The period of study covers the years 1958 to 1965. Experimental results ...

(197407)Many recent measurements of photochemical rate constants and atmospheric ion composition have changed our understanding of D‐region sunrise processes. In this paper several new sunrise mechanisms are suggested in the light ...

(197111)This paper describes a laboratory investigation of two types of dipolar RF admittance probes which could be of use in the ionosphere and inner magnetosphere. Simple theoretical models are presented, using the quasi‐static ...

(197107)A laboratory model of a section of the earth‐ionosphere has been designed and constructed to provide a means for systematically investigating the effect of ionospheric perturbations on long range VLF paths. This model ...

(197103)The development of a method for predicting monthly median values of the F1 layer penetration frequency (ƒ0F1) at any location and time is described. The expressions derived for predicting the monthly median ƒ0F1 are functions ...

(197310)A series of expressions to calculate the monthly median F1 layer penetration frequency (ƒoF1) as a function of the ionospheric index IF2 was reported by DuCharme et al., [1971]. Using similar techniques and the same data ...

A Modified Hypothesis on Turbulence Spectra in the Buoyancy Subrange of Stably Stratified Shear Flow(196912)For a stationary process in the wave‐number range investigated (the buoyancy subrange of stably stratified flow) under the assumption of local homogeneity of the flow, two governing spectral equations derived from equations ...

A Modified Iteration Technique for Use in Computing Electron Density Profiles from Topside Ionograms(197003)An iteration technique used in the computation of topside electron density profiles from topside ionograms of Jackson, 1969, fails to converge for some ionograms. An alternative method of iteration, which converges for all ...

(197408)A Monte Carlo technique is described for finding the response of a horizontally stratified cold plasma to a plane impulsive wave at vertical incidence. The effects of electron collisions with neutral particles and a vertical ...

(197310)The characteristics of electromagnetic surface waves supported by a plane interface separating a semi‐infinite region of free space from another semi‐infinite region consisting of a double stream of plasma streaming parallel ...

(197001)A theory has been developed for the amplitude modulation of microwave signals propagated through a plasma created by an amplitude modulated RF field by taking into account the variations in the electron density and the ...

(197408)Normal‐run magnetograms for the year 1967 from seven Canadian observatories were scaled to study the amplitude characteristics of Pc 5 pulsations. The results of the statistical analysis are: (1) Large amplitude Pc 5's ...

(197003)This paper describes point‐to‐point and radar return attenuation measurements through the atmosphere at a frequency of 15.3 GHz. Clear air fluctuations along a 20‐km path were <1.5 db except in unusual situations, such as ...

(197104)An integral equation for cauculating the attenuation of radio waves propagating over irregular terrain is rederived. The integral equation is applied to three terrain profiles, and the solutions are compared with solutions ...

(197108)One particular backscatter signature obtained with an HF narrow‐beam scan backscatter sounder system is analyzed by considering its behavior statistics and applying a three‐dimensional computer ray‐tracing technique. Other ...

(197408)An X‐band radar designed and built by the Naval Research Laboratory and capable of continuously variable transmitted pulse durations down to 1 nsec is being flown on a NASA Wallops Flight Center C‐54 aircraft to investigate ...

(197406)The waveforms radiated by linear antennas loaded nonuniformly and continuously with resistance are investigated analytically. The antennas considered are symmetrical and excited at the centers by slice generators having a ...
Отображаемые элементы 120 из 379