QX/T 490-2019 in English
VALIDRequirements of ionosonde
- Issued on:2019-09-18
- Implemented on:2019-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
本标准规定了电离层测高仪的组成、功能要求、性能要求、数据处理、数据存储与传输等内容。本标准适用于电离层测高仪的研制开发、设计生产、设备选型、台站组网建设和验收评价。
Introduction
Interpretation of the core content of the standard
This standard systematically specifies the technical requirements for the entire life cycle of the ionospheric altimeter, which mainly includes three major technical modules:
| Module | Core requirements | Technical indicators |
|---|---|---|
| Hardware system | Host + antenna system | Peak power <1kW, sweep frequency range 1-30MHz |
| Data processing | Automatic measurement and inversion | foF2 identification accuracy ≥80% |
| Data management | Storage and transmission | Storage capacity ≥ 6 years of data |
Detailed explanation of key technical indicators
5.1 Host performance requirements
The standard clearly stipulates the core performance parameters of the ionospheric altimeter:
- Sweep accuracy: The frequency setting must be accurate to 0.01MHz
- Time synchronization: Beidou system time synchronization must be used
- Observation efficiency: A complete sweep cycle of 200 frequency points ≤ 300 seconds
Analysis of typical application scenarios
In the space weather warning system, the automatic measurement function required by the standard can achieve:
- Real-time monitoringF2 layer critical frequency (foF2) changes
- Automatically identify sudden Es layer propagation phenomena
- Electron density profile inversion for ionospheric storm warning
Implementation suggestions
Equipment selection precautions
According to the requirements of Chapter 9 of the standard, it is recommended to focus on:
| Reliability index | MTBF≥4000 hours |
| Maintainability requirements | MTTR≤6 hours |
| Service life | Design life≥5 years |
Station construction specifications
- The antenna system must meet the lightning protection requirements of Article 8.1.5
- Indoor equipment should be equipped with a 5kW UPS power supply
- Data storage system needs to reserve 6 years of capacity
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