High-Altitude Platforms (Airships & Balloons)

Stratospheric airships and balloons — High Altitude Platform Systems (HAPS) — flown at 60,000–95,000 ft to provide a persistent, elevated vantage point for radar, RF/ELINT, and EO/IR sensors. Unlike ground-based or tower-mounted C-UAS sensors, altitude lets these platforms see over the horizon and look down on low-flying threats (drones, cruise missiles) that terrain and curvature hide from ground radar — the same physics that made tethered aerostats like JLENS attractive for cruise-missile defense, now applied with free-flying, station-keeping stratospheric platforms instead of tethers.

Scope note: Few of these companies market themselves primarily as drone/missile-detection vendors — most were built for earth observation, telecom relay, or general ISR/ELINT, and are being pulled toward the C-UAS and integrated-air-defense mission as a secondary or emerging use case. That crossover is itself the story: persistent stratospheric sensing is being recognized as a missing layer between ground-based C-UAS (Hardware) and satellites, and several vendors here are now integrating directly with counter-drone companies elsewhere in this section (see Ondas/World View/Sentrycs below).

Entries

• Sceye — New Mexico-built solar-powered stratospheric airship (HAPS); 12-day, 6,400-mile test flight (Mar 2026); EO/IR, methane, and hyperspectral payloads; NASA-funded sensor work
• World View / Ondas Stratollite — Tucson stratospheric balloon (EO/IR/SIGINT); acquired by Ondas (ONDS) in 2026 and integrated with Sentrycs counter-UAS and Palantir AIP into a stratosphere-to-ground ISR/C-UAS stack
• Aerostar — Sioux Falls-based stratospheric balloon and airship maker (Thunderhead); Airbus U.S. partnership; flying Army HELIOS/HAP-DS experimentation missions over the Pacific
• Urban Sky — Denver Microballoon (mHAB); AFRL STRATFI-funded; Project Wallabee paired its balloon with Applied Intuition’s autonomous target-recognition sensor for the Army/Joint Staff J-7
• TCOM — Maryland tethered aerostat maker; radar/SIGINT payloads for cruise-missile, drone, and low-flying-aircraft detection; direct descendant of the JLENS mission set
• Hemeria / Safran BalMan — French maneuverable stratospheric balloon with Safran.AI-enabled real-time ELINT/EW signal detection and classification
• Kalam Labs — India (Lucknow) balloon-launched stratospheric UAV; EO/IR/hyperspectral payloads; deployed at Pokhran and along the Line of Actual Control

Government Programs Driving This Market

These aren’t companies, but they explain why the vendors above are pivoting toward detection missions — noted here for context, not as standalone entries:

• Army HELIOS / HAP-DS — High-Altitude Extended-Range Long-Endurance Intelligence Observation System and its Deep Sensing experimentation line; soliciting sub-15-lb radar, COMINT, and ELINT payloads for balloons at 60,000+ ft, explicitly to “detect, locate, identify, and track” targets including for air/missile defense cueing
• COLD STAR — DoD’s Covert Long-Dwell Stratospheric Architecture; originally counter-narcotics balloon surveillance (2019, ~25 balloons over South Dakota), transitioned toward broader military use
• Project Wallabee — Army G-2 / Joint Staff J-7 test pairing Urban Sky’s balloon with an Applied Intuition autonomous target-recognition sensor (2026)
• JLENS (legacy) — Army’s tethered-aerostat Joint Land Attack Cruise Missile Defense Elevated Netted Sensor; proved the concept (elevation solves the low-altitude cruise-missile/drone detection problem) but was cancelled after a 2015 tether-break incident; TCOM’s current radar aerostat line is the closest commercial descendant

Ondas / World View / Sentrycs Integration

Worth calling out explicitly because it directly connects this subtopic to the rest of the section: after acquiring World View in 2026, Ondas (ONDS) — already the parent of Sentrycs — began integrating World View’s Stratollite stratospheric ISR with Sentrycs’ ground-based Cyber-over-RF counter-drone system and Ondas’ own Optimus tactical drone platform, with Palantir’s AIP tying the layers together. This is the clearest example of a stratospheric sensor company being folded directly into a counter-drone product line rather than staying a standalone earth-observation or comms business.

Companies

Startups & Development Partners

Public Companies / Recent M&A

Incumbents