QX/T 466-2018 in English

Analysis of the standard technical framework

QX/T 466-2018 is my country's first industry standard for meteorological detection systems for micro fixed-wing UAVs, which stipulates the technical requirements for UAV-borne meteorological systems with a take-off weight of less than 100kg. The standard covers three core modules: temperature/humidity/pressure sensors, and its technological evolution is reflected in:

Detailed explanation of core performance indicators

The main measurement performance requirements specified in Chapter 5.7 of the standard are as follows:

• Air temperature measurement: -60℃~50℃ range, ±0.3℃ error, better than QX/T 36-2005 radiosonde standard
• Humidity measurement: Using segmented error control, ±4% below 80%, ±8% above 80%
• Air pressure measurement: 300-1060hPa range, ±1hPa accuracy, attention should be paid to applicability in plateau areas

Key requirements for system integration

5.2 Installation Specifications

Sensor installation must meet the following requirements:

1. Temperature/humidity sensors must be equipped with anti-radiation shields
2. Pressure sensors must be kept away from propeller turbulence areas
3. Electrical interfaces must be triple-proofed (moisture-proof/mildew-proof/cold-proof)

5.5 Data System

The data link must ensure the following:

• Minimum 9600bps transmission rate
• 24-hour local storage capability
• Compliant with QX/T 234—2014 archiving format

Implementation Suggestions and Case Studies

Standard development trends

With the implementation of the WMO 2014 Observation Guide, future revisions may involve:

1. Increase wind speed/direction sensor requirements
2. Expand 5G communication module compatibility
3. Introduce AI quality control algorithm specifications