PWS (Plasma Wave Detector and Sounder) onboard the Akebono (EXOS-D) satellite has three sub-systems; i.e. i) a sub-system for natural plasma wave observations (NPW), ii) a sub-system for stimulated plasma wave experiments (SPW) and iii) the instrumentation for measurement of the number density of electron (NEI).

This dataset contains the electric field intensity spectrum data of 2 seconds time resolution observed by NPW sub-system. Each data point consists of 512 electric field intensity in a frequency range from 20 kHz to 5.12 MHz with a band width of 1 kHz. The frequency variation in each data block is given with linear function of corresponding step number; i.e.

• data block 1 (step 1 - 64) : 20kHz - 140 kHz
• data block 2 (step 65 - 128) : 140kHz - 380 kHz
• data block 3 (step 129 - 192) : 380kHz - 1340 kHz
• data block 4 (step 193 - 256) : 1340kHz - 5120 kHz

Data Analysis

Here, you can find a TDAS load procedure file for PWS electric field intensity spectrum data. PWS electric field intensity spectrum data analysis becomes available on TDAS with this load procedure. TDAS (THEMIS Data Analysis Software suite) has been developed by THEMIS project. See TDAS web page for details.

If you have any questions or request for the data, please contact DARTS.

Request for using this data

In any publications, the use of the Akebono data should be acknowledged, for example,

“Akebono/PWS data were provided through DARTS at the Institute of Space and Astronautical Science, JAXA in Japan.”