Telesat eyes defense role with laser comms test ahead of LEO debut
Telesat announced from Washington that it will launch the first two Lightspeed low‑Earth‑orbit satellites in December and will conduct a laser‑communications relay demonstration in 2027 under a $30 million NASA contract. The Canadian operator is tailoring the Lightspeed system for U.S. defense customers by adding military Ka‑band frequencies and by showcasing optical inter‑satellite links that it says can move large volumes of data with low latency while reducing exposure to jamming or interception. The demonstration is intended to serve as a proof point for the Pentagon and U.S. Space Force as they develop a “space data network” for missile‑defense and other high‑demand applications.
Each of the planned 198 Lightspeed satellites will carry four optical terminals supplied by Tesat‑Spacecom, enabling high‑speed links between spacecraft. The 2027 test will simulate a data‑relay scenario in orbit, with one satellite acting as a mission spacecraft and a second serving as a relay node; a subsequent phase will involve a Planet Labs imaging satellite equipped with an optical terminal that transmits data through the Lightspeed constellation to a ground station. Lightspeed’s architecture also incorporates Ka‑band frequencies aligned with the Pentagon’s existing wideband satcom systems, and the company plans to offer a “capacity pool” model that lets the government access bandwidth and optical connections on a daily, weekly or monthly basis without owning satellites. Commercial service is slated to begin in 2028 after the deployment of the first 156 satellites, with launches contracted to SpaceX in batches of roughly fifteen spacecraft.
The laser‑link demonstration places Telesat in direct competition with SpaceX’s Starlink and Starshield constellations and Amazon’s emerging LEO system, all of which are pursuing defense contracts and deploying optical inter‑satellite links. Success could reinforce Telesat’s position as a supplier of hybrid military‑commercial networks, a sector that is expanding as the Space Force’s Golden Dome missile‑defense initiative seeks ever‑greater data‑transport capacity. Emerging concepts such as orbital data centers are expected to increase pressure on satellite networks to provide larger “pipes” and faster ground‑link throughput, underscoring the strategic relevance of Telesat’s planned capabilities.
