ResourceName
Wind Waves RAD1_L3A : Direction Finding Data (Unpolarized Source Assumption)
DOI
https://doi.org/10.24400/802406/mbdb-0ep4
ReleaseDate
2022-09-01 16:55:14Z
Description
This data set contains Wind Waves RAD1 direction-finding data.
Direction-finding inversion method has been applied on RAD1_L2 high resolution data to derive characteristics of radio emissions.
The method is based on the work by Manning and Fainberg, Space Science Instrumentation, 1980. It returns the absolute flux density (in W/m^2/Hz) of the radio source, as well as the azimuth, and the elevation angles (in degrees) in a RTN reference frame centered on the Wind spacecraft.
The method is only valid under the following criteria:
* Radio source is unpolarized
* Radio source has an uniform brightness
* Radio source signal remains constant at a given frequency over a spacecraft rotation (~3sec)
* Short antenna dipole assumption is valid
* Z axial antenna is not tilted
Absolute flux density is calibrated using radio galaxy method (see Zaslavsky et al., 2011. DOI 10.1029/2010RS004464).
Caveat: Level 3 df data are computed with the following assumptions : (i) incoming wave properties do not change during a spacecraft rotation (~3 seconds)parameter set, (ii) radio sources are unpolarized (U=V=Q=0), (iii) galaxy radio emission is not subtracted, (iv) radio sources have an uniform brightness distribution, (v) Z antennas are not tilted
Acknowledgement
Data provided are publicly available.
If used in presentations or publications, please acknowledge Wind/Waves Investigation (K. Issautier and K. Goetz).
We recommend the data users to contact the Wind/Waves team early in their study.
For reporting purposes, we request bibliography information for any publication, etc., using these data.
Please send information on the use of this data to: K. Issautier (PI).
We suggest to add the following lines into the acknowledgments: The authors acknowledge CNES (Centre National d'Etudes Spatiales), CNRS (Centre National de la Recherche Scientifique), and Observatoire de Paris for support to the Wind/Waves team and the CDPP (Centre de Données de la Physique des Plasmas) for the provision of the Wind/Waves data.
The following paper should also be used to reference: Bougeret et al, Space Science Reviews, 1995, doi: 10.1007/BF00751331
Contacts
Name
Radio source angular radius
Description
Radio source angular radius, assuming an uniform brightness distribution.
Units
degree
UnitsConversion
0.0174532925>rad
Support
An official website of the United States government
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.