Sensors

Research

CReSIS has been developing radars optimized for polar measurements for over 15 years. Radars developed by CReSIS are designed to sound and image most challenging areas of large ice sheets: their fast-flowing outlet glaciers and margins. CReSIS also developed radars to map internal layers in ice with fine resolution and snow/snow over ice. CReSIS leads the way in developing long-duration unmanned aerial systems (UAS) to carry our sensors and in miniaturization and integration of some of our radar systems. Current projects also include radars designed for soil moisture and plant phenotyping.

CReSIS radars have up to 4 versions based upon weight: Standard Rack (over 70lbs.) Compact or –C versions (10 to70 lbs.), Mini versions (2.5 to 10 lbs.) and Micro versions (under 2 lbs.)

Snow (Standard, Compact, Mini and Micro)
The KU CReSIS UWB Snow Radar is a frequency-modulated, continuous-wave system that operates between 2–18 GHz (Figure 18). It is designed for centimeter-scale sounding of snow layering to depths up to ~100 m in the dry snow zone that constitutes the vast majority of West Antarctica

MCoRDS (Standard and Compact)
The University of Kansas (KU) CReSIS UWB MCoRDS instrument is a high-power, pulsed radar system optimized for measuring ice thickness and mapping subsurface layers to depths exceeding 4 km. This radar operates from 150–600 MHz

UWB-Ice (Standard)
A 150-600 MHz VHF radar that offer the highest power, finest range resolution, and best cross-track resolution of any of the CReSIS RDSs

Accumulation (Standard and Compact)
An ultra-wideband radar that maps internal layers in the upper few hundred meters of the ice sheet and sounds shallow ice caps and ice shelves. It has also been shown to measure the bottom melt rate of ice shelves, and it demonstrates the potential to measure thick snow on sea ice and sound sea ice thickness.

Ku-band (Standard)
Collects high-precision surface elevation measurements over polar ice sheets.

Wheat radar (Compact)
This instrument collects coherent radar measurements of wheat canopies over the 2-18 GHz frequency rage with a PRF of 500 Hz. T

HF (Compact, Mini and Micro)
The HF radar sounder is a compact ~2.5 kg system that operates at two frequency bands, 14 & 35 MHz. Mounted on the G1X this UAS has a 120 km range, 75 min endurance, 30 m/s cruise speed, and consumes ~4 L of fuel per flight. Recent work has demonstrated an ability to fly repeat tracks with ±10 m horizontal and ±3 m vertical accuracy, enabling precise construction of multipass arrays.

Soil/Snow-(Mini)
The Soil/Snow mini is capable of measuring water content in the topsoil. The radar is integrated on a small Unmanned Aerial Vehicle helicopter. The radar radiates microwaves over a 2 to 18 GHz (Gigahertz) ultra-wideband frequency range, with a power of 1mW.