L3Harris’ sensor satellite for medium Earth orbit constellation passes review
News March 4, 2024 BySandra Erwin
L3Harris’ sensor satellite for medium Earth orbit constellation passes
review
The company is competing in the U.S. Space Force’s Medium
Earth Orbit (MEO) Missile Warning and Tracking program
WASHINGTON — An infrared sensor satellite that L3Harris
designed for a future U.S. military constellation passed a preliminary review,
positioning the company to compete in the Space Force program known as Medium
Earth Orbit (MEO) Missile Warning and Tracking.
The Space Force plans to
deploy a network of satellites in MEO to detect and track hypersonic
missiles.
For the first deployment of satellites, known as Epoch 1,
the Space Systems Command has already ordered six spacecraft from Millennium Space Systems. But
the Space Force said as many as nine satellites could be procured for Epoch 1.
In the next phase of the program, Epoch 2, it could buy as many as 18
additional satellites.
The Space Force is evaluating Raytheon’s design for Epoch
1, and L3Harris would become a third competitor.
Multi-orbit architecture
MEO is a new location for the military’s
missile-detecting infrared sensor satellites. DoD is planning a multi-orbit
architecture with satellites in low, medium, geostationary and highly
elliptical orbits.
The Space Force’s Space Development Agency is
building a network of missile-tracking sensors in low Earth orbit. MEO
satellites will be at higher altitudes above 1,200 miles, providing a middle
ground between LEO and geosynchronous orbits in terms of satellite lifetime,
coverage area and time delays in signals.
Paul Wloszek, general manager for missile defense at
L3Harris, said March 4 that the company’s proposed payload completed a
preliminary design review, “and keeps the program on track for critical design
review in 2024.”
The Space Systems Command announced it plans to release a
draft request for bids for Epoch 2 satellites later this year and select
suppliers in 2025.
Wloszek said the government is challenging the industry
to develop far more sophisticated payloads for the Epoch 2 program. Whereas
Epoch 1 satellites only have to track missiles in flight, Epoch 2 satellites
have to perform both missile warning and missile tracking.
Currently, satellites in geostationary Earth orbit
provide early warning of missile launches, but there are no satellites in orbit
today that can track hypersonic missiles in flight. The Space Development
Agency’s Tracking Layer and the Space Force’s Epoch 1 MEO satellites are
focused primarily on tracking with some limited capability for missile warning.
The Epoch 2 satellites are expected to advance both
tracking and warning, Wloszek said. “DoD has tasked the Space Force and the
industrial base to develop a multi-layered architecture that is resilient and
proliferated.”
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