QX/T 345-2016 in English
VALIDOperational failure levels of polar-orbiting meteorological satellites and their ground application systems
- Issued on:2016-09-29
- Implemented on:2017-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$135.00
| Standard No: | QX/T 345-2016 |
| Document status: | VALID |
| Title in English: | Operational failure levels of polar-orbiting meteorological satellites and their ground application systems |
| Title in Chinese: | 极轨气象卫星及其地面应用系统运行故障等级 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-09-29 |
| Implemented on: | 2017-03-01 |
| ICS Classification: | 07.060-Geology. Meteorology. Hydrology |
| Chinese Classification: | A47-Meteorology |
| Professional Classification: | QX-Meteorology |
| Related Keywords: | judgment standard ground system
fault data interruption judgment standard catastrophic failure permanent failure 1-2 orbital circles data interruption ground system |
Introduction
Analysis of the core content of the standard
This standard establishes a four-level fault classification system for the space segment and ground segment of the polar-orbiting meteorological satellite FY series:
| Fault level | Satellite system judgment standard | Ground system judgment standard |
|---|---|---|
| Catastrophic failure | Permanent failure of platform/all payloads | Not applicable |
| Level 1 fault | Data interruption for ≥2 orbital circles or data availability <85% for 3 orbits | Data abnormality for ≥3 receiving circles or data processing interruption for ≥6 hours |
| Level 2 fault | 1-2 orbital circles data interruption or data availability <85% for 1-3 circles | 2 receiving circle abnormalities or 4-6 hours processing interruption |
| Level 3 fault | ≤1 orbital circle abnormality or single-circle data availability <85% | 1 receiving circle abnormality or 2-4 hours processing interruption |
Key technical indicators
Data availability 85% as the core threshold:
- Based on the observation continuity requirements of payloads such as microwave hygrometer
- Refer to QJ3050A-2011 FMECA standard for aerospace products
- Orbital complementarity with QX/T 196-2013 geostationary satellite standard
Implementation suggestions
A case study of a visible light infrared scanning radiometer fault handling:
- Data missing for two consecutive orbital circles → triggering the first-level fault response plan
- Starting the backup data processing channel
- Completing the fault zeroing report within 72 hours
Standard evolution analysis
Main improvements compared to the 2007 trial version:
- Added fault judgment for the linkage between the ground system and the space segment
- Refine the calculation method for data availability
- Clear the orbital circle time benchmark (about 100 minutes/circle)
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