"The Department of Defense's Space Development Agency (SDA) is developing a new space-based architecture comprised of a large constellation of at least 300-500 satellites in low Earth orbit (LEO) to detect and track potential missile threats. This system will complement other space systems currently providing this capability. SDA is developing this new system in part in response to peer and near-peer competitors that are designing strategic and tactical hypersonic weapons that are not easily detected, identified, or tracked by current space-based missile warning systems."
"Known within the Defense Department (DoD) as the Proliferated Warfighter Space Architecture (PWSA) - and started in 2020 -- the plan, according to the GAO report, is "intended to provide space surveillance and communications for persistent, timely, global awareness [of missile threats] that is designed to operate in an increasingly contested space environment." DoD so far has committed nearly $11 billion to this effort, which is programmed to cost near $35 billion through fiscal year 2029."
The Proliferated Warfighter Space Architecture (PWSA), initiated in 2020, aims to provide persistent space surveillance and communications for global missile awareness and operation in contested space. The effort centers on a large LEO constellation to detect and track missiles and warheads that evade current space-based warning systems, particularly strategic and tactical hypersonic weapons. DoD has committed nearly $11 billion so far, with program costs projected near $35 billion through fiscal year 2029. The architecture focuses on tracking launched missiles and warheads while also depending on separate capabilities for launch detection and intra-system communications.
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