Aqua Satellite Near Real-Time Spacecraft Attitude Data

PM1ATTNR files contain Aqua satellite Near Real Time (NRT) daily spacecraft attitude data in a native binary format. The data is preprocessed by the ECS system to a standard supported by the SDP Toolkit and is used for determining the geolocation of Earth remote sensing observations. The data is produced by the LANCEMODIS organization.

Use Cases

• Calculate precise geolocation for MODIS/Aqua Earth observations using attitude parameters like roll, pitch, and yaw.
• Analyze spacecraft orientation time-series data for sensor pointing accuracy and stability assessments.
• Integrate attitude data with other ancillary datasets via timestamps encoded in the file naming convention (Ayyyyddd.hhmm).

Strengths

• Data is provided in Near Real Time (NRT) for timely processing.
• Data is preprocessed to an internal standard supported by the ECS SDP Toolkit.

Limitations

• Specific row counts, file sizes, and data completeness metrics are unknown.
• Data is in a proprietary binary format requiring the specific SDP Toolkit for reading.

Provenance

Source

NASA Earthdata (LANCEMODIS).

Collection Method

Preprocessed from PM1 Platform Attitude Data by the ECS system.

Time Range

Temporal coverage is defined by the file name (year, Julian day, hour, minute).

Freshness

Near Real Time (daily).

Geography

Global, corresponding to Aqua satellite orbit.