[PP2-3-13] Active-Passive microwave imaging

With this concept active and passive microwave imaging techniques are combined to record electromagnetic waves in an active (sending & receiving) and a passive (only receving) mode either simultaneously or with negigible time lag. The active sensor is normally a Real Aperture Radar (RAR) or Synthetic Aperture Radar (SAR), while the passive sensor is a radiometer or synthetic aperture radiometer. Both acquisition modes can be operated on a single platform or on different platforms. Satellite missions with active-passive imaging capabilities are the NASA missions AQUARIUS and SMAP.

External resources

• Entekhabi, D., et. al. (2010). The Soil Moisture Active Passive (SMAP) Mission. Proceedings of the IEEE, 704-716, DOI: : 10.1109/JPROC.2010.2043918.
• Le Vine, D., M., et al. (2015). Status of Aquarius/SAC-D and Aquarius Salinity Retrievals. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 8, no. 12, pp. 5401-5415, DOI: 10.1109/JSTARS.2015.2427159.

Learning outcomes

• 1508 - Explain what active-passive microwave imaging is

  Explain what active-passive microwave imaging is

Self assessment

Outgoing relations

• [PP2-3-13] Active-Passive microwave imaging is prerequisite of [PP2-3-7] Synthetic Aperture Radar (SAR) geometric configuration
• [PP2-3-13] Active-Passive microwave imaging subclassof [PP2-3] Detecting microwaves
• [PP2-3-13] Active-Passive microwave imaging subclassof [PS1] Types of remote sensing sensors

Contributors

• Thomas Jagdhuber
  German Aerospace Center
  https://scholar.google.de/citations?user=ZEaPq_4AAAAJ&hl=de