GB/T 40134-2021 in English
VALIDElectromagnetic compatibility requirements for space systems
- Issued on:2021-05-21
- Implemented on:2021-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
Price(USD)：
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《GB/T 40134-2021航天系统电磁兼容性要求》由TC425（全国宇航技术及其应用标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Core Requirements for Electromagnetic Compatibility of Space Systems
| Technical Field | Launch Vehicle | Spacecraft | Key Indicators |
|---|---|---|---|
| EMI Safety Margin | Class I 12-20dB | Class I 12-20dB | EED interface requires 18dB |
| External Electromagnetic Environment | 20-200V/m | 20-50V/m | The most stringent in the 1GHz frequency band |
| Power Quality | Ripple ≤500mVpp | Transient 175% rated voltage | |
Key technology implementation points
1. Lightning protection design
The launch vehicle must meet the following requirements:
- The overall resistance of the rocket body is ≤100mΩ
- The lap resistance of the arrester is ≤10mΩ
- Use 35mm² grounding wire to connect the launch tower
2. Static electricity control measures
Special requirements for spacecraft:
- Surface resistivity is ≤109Ω·cm
- The deep charging shield must meet the electron integrated flux requirements
- EEDNeed to pass 25kV electrostatic discharge test
Test verification system
| Test type | Frequency range | Typical equipment | Acceptance criteria |
|---|---|---|---|
| Conducted emission | 25Hz-40GHz | LISN/Current probe | ≤56dBμV@150kHz |
| Radiated sensitivity | 10kHz-40GHz | GTEM cell | 200V/m@1GHz |
| Unplugging test | - | Safety isolation resistance | 10kΩ-5MΩ resistance |
Special working condition processing
Micro-discharge effect verification must meet the following requirements:
- 6dB power margin for identification level
- 3dB margin for acceptance level
- Focus on testing the field strength concentration area of RF components
Sample only — not a preview of GB/T 40134-2021
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