Abstract
AbstractThis paper provides an update and overview of the Center for Remote Sensing of Ice Sheets (CReSIS) radars and platforms, including representative results from these systems. CReSIS radar systems operate over a frequency range of 14–38 GHz. Each radar system's specific frequency band is driven by the required depth of signal penetration, measurement resolution, allocated frequency spectra, and antenna operating frequencies (often influenced by aircraft integration). We also highlight recent system advancements and future work, including (1) increasing system bandwidth; (2) miniaturizing radar hardware; and (3) increasing sensitivity. For platform development, we are developing smaller, easier to operate and less expensive unmanned aerial systems. Next-generation platforms will further expand accessibility to scientists with vertical takeoff and landing capabilities.
Highlights
Airborne radar remote sensing is an effective tool in geoscience fields for conducting Earth observations
In 2005, KU led the effort to join with researchers from other universities and organizations to form the Center for Remote Sensing of Ice Sheets (CReSIS), whose goals included developing new technologies to meet the needs of the polar science community
The radar systems developed by CReSIS can be organized into four major categories: radar depth sounders (RDS), accumulation radars, snow radars and radar altimeters
Summary
Airborne radar remote sensing is an effective tool in geoscience fields for conducting Earth observations. Over the last 30 years, researchers at the University of Kansas (KU) have developed a series of airborne radars for ice and snow measurements; over the last 15 years, technology developments have included several unmanned aerial systems (UAS) for polar remote sensing. The radar systems developed by CReSIS can be organized into four major categories: radar depth sounders (RDS), accumulation radars, snow radars and radar altimeters These radars cover a wide frequency range (14 MHz to 38 GHz); together, they provide a vertical profile of the entire ice column with various degrees of resolution. Frequency Peak Tx power Operating mode Vertical Res. Ice thickness Bedrock topology Deep internal layering Varies over 14–600 MHz 100–6000 W. requires a custom installation, for the radar antennas, over the last decade, CReSIS has developed and integrated over 30 unique radar configurations. The radar overview sections are followed by a section that discusses CReSIS’s development work on nextgeneration remote-sensing platforms
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