Information about the RPW electrical antennas deployment operation during the LEOP.
Working Group Members
RPW sub-system teams will also contribute to define the RPW modes to be set during the deployement.
Contact at MOC
- Sylvain dot Lodiot at esa dot int
Description of the operation
Context and objectives
The main objective is to acquiring RPW data during the electrical antennas (ANT) deployement (x3).
The antenna deployment will occure during the LEOP phase.
RPW will be switched-off before and after the antenna deployement.
The SSMM will be available.
MOC will control the deployment of the antennas.
The ANT deployement will be performed one by one, starting with the PZ (ANT1), then PY (ANT2), finally MY (ANT3). The deployment of the ANT1 will start at T1=TBD, the deployment of the ANT2 at T2=TBD, and the deployement of the ANT3 at T3=TBD. The details of the deployment is given in the RPW Antenna User Manual.
Operation timeline and instrument configuration overview
Fig. 1. Antenna's operation timeline
In this phase, RPW measures the noise of the platform. RPW is set in a single specific configuration for antenna deployment. Measurements will be also taken during the first and last 10 minutes before and after the antenna deployment. RPW in SURVEY_BURST SCIENCE submode with both spectral modes (all frequencies for B) and waveforms. The instrument is expected to be switched off before and after the operation.
RPW is set in a specific configuration for ANT deployment. Measurements will be taken during the first and last 10 minutes (before and after the ANT deployment). RPW in BURST mode with both spectral modes (all frequencies for B) and waveforms.
Minimal requirements:
- THR: B field on channel 1 and E on channel 2 (all frequencies, max freq resolution).
- LFR: spectral mode for B and E at the maximum frequency resolution, waveforms at the minimum resolution
- TDS snapshots at the minimum resolution
Maximal requirements
- THR: B field on channel 1 and E on channel 2 (all frequencies max freq resolution).
- LFR: spectral mode for B and E at the maximum frequency resolution, waveforms at the maximum resolution
- TDS snapshots at the maximum resolution.
The table below gives the organization of the operation stages and associated timing.
Activity | Step | Description | Time since beginning |
|---|---|---|---|
| Instrument initialization | A | RPW switch on and go to Antenna mode/configuration | 0 min |
| Antenna deployment data acquistion and visualization | B | Beginning of the first Antenna deployment | 10 min |
| Antenna deployment data acquistion and visualization | C | End of the third antenna deployment | 10+TBD min |
| Instrument switch off | D | RPW switch off | 20+TBD min |
The table below gives the RPW modes and configurations (i.e., states) expected over the operation timeline.
First step | Last step | RPW configuration | Duration | Comment |
|---|---|---|---|---|
| A | B | RPW_NECP_ANT-DEPLOY_CONFIG1 | 10 min | |
| B | C | RPW_NECP_ANT-DEPLOY_CONFIG2 | TBD | Duration of ANT deployement (TBD) |
| C | D | RPW_NECP_ANT-DEPLOY_CONFIG1 | 10 min |
Orbitography
TBW
Success criteria
TBW
Operational constraints, assumptions and dependencies
Resources allocation
Power consumption allocation
TBW
Telemetry allocation
900 kbps available for platform + payload.
Details of allocation are TBD
Instrument-related constraints, assumptions and dependencies
The DPU SCIENCE SBM_DETECTION submode can be applied on-board during NECP, but there is not guarantee that the resulting SBM data stored on the SSMM can be downlinked to ground by MOC during this phase. (Note that the dump of the SBM data by the DPU can be forced by TC, since in the nominal case the transfer of data from the DPU SBM buffers to the SSMM is only done when an event is detected on-board.)
Spacecraft-related constraints, assumptions and dependencies
TBW
Ground constraints, assumptions and dependencies
TBW
Related resources
Meeting Notes
Actions items
Attached items
- RPW-related operations during LEOP – The SSMM will finally available during these operations.
- procedure_ant_depl.docx
- TDS configuration :