MARSIS Active Ionosphere Sounder: Full Resolution Spectral Density Measurements

The Mars Express MARSIS Active Ionospheric Sounder (AIS) full resolution data set includes all spectral information calibrated in units of spectral density for the entire Mars Express nominal mission. The data set consists of a transmit frequency followed by a time series of spectral density measurements of the received power. It was produced by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Modeling Martian ionospheric structure based on spectral density measurements
• Analyzing signal propagation and attenuation in the Martian atmosphere based on received power time series
• Creating spectrogram overviews and ionograms for individual sounding activities based on the browse products mentioned in the description

Strengths

• Data is calibrated in units of spectral density, suggesting a processed, scientific-grade product
• Includes the entire Mars Express nominal mission, implying a complete temporal record for that period
• Provides both spectrogram overview plots and individual ionograms as browse products

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the Mars Express spacecraft's MARSIS Active Ionospheric Sounder (AIS) instrument.

Time Range

Covers the entire Mars Express nominal mission.

Freshness

Last updated 2026-03-13 11:10:39.507909; freshness should be verified

Geography

Mars