Pioneering the Future of Earth Observation
As pioneers in our constellation, Tomorrow.io’s Pathfinder radar satellites are blazing a new trail in weather and climate observation, proving the capabilities of private industry in providing science-quality spaceborne radar observations for operational forecasting.
Equipped with a state-of-the-art precipitation radar payload, Tomorrow-R1 and Tomorrow-R2 employ innovative operational modes and meticulous instrument calibration to realize precipitation measurements of unprecedented sensitivity and accuracy, ushering in a new paradigm in Earth observation.
Launched in 2023, the Pathfinder radars serve a three-fold purpose for Tomorrow.io’s first-of-its-kind multi-sensor constellation:
- Demonstrate advanced radar subsystems and sampling techniques
- Acquire diverse datasets of cloud, precipitation, and surface backscatter for optimal geophysical algorithm development
- Ensure accurate instrument calibration and validation of retrieved geophysical products
At a Glance
550 km / SSO
- Vertical Resolution
Harnessing Breakthrough Radar Innovation
Powering the Pathfinder satellites is a next-generation Ka-band radar. This game-changing technology enables detailed, accurate, and rapid observations of Earth’s atmosphere and surface like never before.
- high (>400 MHz) and low bandwidth modes
- Wide field of view (> 400 km )on the ground.
- Beam size on ground 5km
- 35.5-36 GHz Ka-band
Delivering Unmatched On-Orbit Performance
Set at a strategic orbital altitude of 500 km, the Pathfinders offer:
Innovative Operational Modes
High-duty cycle (30%) Ka-band radar with frequency-diverse waveforms provides unmatched sensitivity, optimized for detecting precipitation, surface scatterometry, and centimetric radar altimetry through reconfigurable sampling.
Near Surface Precipitation Detection
Tomorrow-R1/R2 radars achieve high-resolution and accurate geolocation of precipitation by suppressing surface clutter and detecting near-surface precipitation, providing the clearest picture at the Earth’s surface where it matters most.
Science-Quality Instrument Calibration
Comprehensively characterize radar calibration through pre-launch target testing, a high-fidelity transceiver calibration loop, comparative assessments, and a dedicated ground-based active calibration system.