ionosonde


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ionosonde

[ī′än·ə‚sänd]
(engineering)
A radar system for determining the vertical height at which the ionosphere reflects signals back to earth at various frequencies; a pulsed vertical beam is swept periodically through a frequency range from 0.5 to 20 megahertz, and the variation of echo return time with frequency is photographically recorded.
References in periodicals archive ?
The function of HFSWR looks like ionosonde in this paper.
Also, the validation of IRI model has been compared with a large amount of data including data from the most recent ionospheric satellites (KOMPSAT, ROCSAT and TIMED) and data from global network of ionosondes. Several IRI teams are working on specific aspects of the IRI modeling effort including an improved representation of the topside ionosphere [14].
In our study, we collected data on the F2-layer critical frequency (foF2), hmF2, B0, [H.sub.m], and the total electron content (TEC) from the Chung-Li ionosonde station (24.9[degrees]N, 121.1[degrees]E) and YMSM GPS receiver (25.2[degrees]N, 121.6[degrees]E).
POLAN is widely accepted for inversion of ionograms obtained by classical ionosonde [16] and allowed our measurements of foF2, hmF2, B0, and [H.sub.m].
Ilma, "Modeling the IRI topside profile using scale heights from ground-based ionosonde measurements," Advances in Space Research, vol.
Figure 9 compares the range-time distribution of the number of occurrences of the ionospheric echoes detected by the CODAR-SeaSonde at DATAN (b) and observed by the Chung-Li ionosonde (a) for the period from 30 June to 31 July, 2015.
The concurrent ionospheric traces in the ionogram observed by the Chung-Li ionosonde are also employed in this study to help to identify the ionospheric echoes detected by the SeaSonde radar.
* Ionospheric data collection by means of a network of ionosondes (step 1): during this phase a 3D electron density estimate of the ionospheric volume of interest must be carried out by means of ionospheric models or by means of a network of ionosondes (Figure 2).
The ray-tracing makes use of the 3-D electron density profile, which is estimated by mean the IRI model or by a network of ionosondes. The charts are carried out off-line by a dedicated work station.
Those atmospheric changes can be tracked using satellites and radar systems called ionosondes.