DOW-UAP-D148 — Tracking Hypersonic Vehicles
This 46-page DIA reference report surveys detection and high-resolution tracking of atmospheric hypersonic vehicles through radar, infrared, optical, lidar, radio-reflection, acoustic, infrasound, and seismic signatures. It emphasizes shock waves, ionized wakes, hot surfaces, and turbulence, recommending wake databases and complementary sensing methods rather than claiming a single universal detector.
- File
- Document · Release 06
- Date
- Nov 20, 2010
- Location
- Las Vegas, Nevada
- Extent
- 46 pages
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Probed Assessment
Hypersonic tracking is strongest when radar, infrared, lidar, optical, acoustic, and wake signatures are combined.
Key takeaways
- The report says supersonic motion produces shock waves in the surrounding flow and near the vehicle surface.
- The report identifies the ionized wake and shock wave as observable position and velocity signatures.
- The survey organizes detection methods into electromagnetic, optical, and acoustic or seismic families.
- The report uses speeds above roughly Mach 5 as the conventional hypersonic regime.
Why it matters
The report shows why hypersonic tracking is a signature-integration problem and why wake databases and complementary sensors matter more than any one detector.
Corroboration
The released PDF supports the cited methods, calculations, limitations, and conclusions. It does not establish that every future hypersonic vehicle can be detected continuously by any one sensor family.
Open questions
- • Which sensor combinations best maintain tracks through changing altitude and weather?
- • How stable and discriminating are wake signatures across vehicle designs?
Probed separates this editorial assessment from the source claims below. It summarizes what the released artifact supports; it is not independent verification.
Official Description from War.gov
This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD surveys how hypersonic vehicles may be detected and tracked by exploiting the physical effects they create in flight, especially shock waves, ionized gas, hot surfaces, and turbulent atmospheric wakes. The report reviews a broad set of detection methods, including radar, infrared sensing, optical imaging, LIDAR, passive radio reflection, infrasound, and seismic techniques, and argues that the most effective systems will likely combine multiple sensor types, because each captures different features of a high-speed vehicle’s passage through the atmosphere. It presents radar and infrared sensing as the strongest existing tools for operational detection, while giving particular attention to wake-based methods such as LIDAR and passive radio techniques for improving tracking, identification, and discrimination of future hypersonic aircraft. The paper identifies hypersonic vehicles as an evolving surveillance problem in which future progress will depend on better multi-sensor integration, improved wake characterization, and novel signature-exploitation techniques.
Preserved verbatim as source metadata. This wording is separate from Probed’s file-specific description and assessment.
File Context
Related entities
Tracker findings
Supersonic motion produces shock waves in the surrounding flow and near the vehicle surface
The report says supersonic motion produces shock waves in the surrounding flow and near the vehicle surface.
Organizes detection methods into electromagnetic, optical, and acoustic or seismic families
The survey organizes detection methods into electromagnetic, optical, and acoustic or seismic families.
Radar as an established method for detecting missiles, reentry vehicles, and nearby space
The report describes radar as an established method for detecting missiles, reentry vehicles, and nearby space objects.
Lidar as laser-pulse ranging that can also characterize atmospheric wakes
The survey describes lidar as laser-pulse ranging that can also characterize atmospheric wakes.
The infrasound section explains how separated microphones can derive speed from a passing
The infrasound section explains how separated microphones can derive speed from a passing shock front.
The comparison shows that lidar can resolve several wake properties while acoustic, seismic,
The comparison shows that lidar can resolve several wake properties while acoustic, seismic, and optical methods add broader path information.
Release provenance
- Release
- Release 06
- Official ID
- release-06-file-052-dow-uap-d148-aawsap-dird-detection-and-high-resolution-tracking-of-vehicles-at-hypersonic-veloci
- Cleared
- Sep 18, 2026
Source Claims
Claims are attributed to the released source and remain distinct from Probed’s assessment and tracker findings.
The document identifies itself as a DIA technical reference product.
Defense Intelligence Reference Document provides nonsubstantive but a uthoritative reference information
The report says supersonic motion produces shock waves in the surrounding flow and near the vehicle surface.
shock waves develop in the flowfield and near the surface of the object
The report identifies the ionized wake and shock wave as observable position and velocity signatures.
creates an ionized wake and shock wave that can be used to detect their position
The survey organizes detection methods into electromagnetic, optical, and acoustic or seismic families.
electromagnetic, optical, and acoustic/seismic methods
The report uses speeds above roughly Mach 5 as the conventional hypersonic regime.
Hypersonic flow usually refers to the regime where objects are moving faster than Mach 5
The report describes radar as an established method for detecting missiles, reentry vehicles, and nearby space objects.
RADAR technology has been used for the detection of missiles, reentry vehicles, and space objects
The infrared section grounds thermal detection in the temperature-dependent radiation emitted by objects.
All objects emit radiation that is a function of their temperature
The report recommends building a database of aircraft wake characteristics.
Build a Database of the Wake Characteristics for Existing Aircraft
The infrasound section explains how separated microphones can derive speed from a passing shock front.
Microphones can be used as a chronograph to measure the velocity of airborne objects
The seismic section treats vehicle sonic booms as signals that can couple into the ground.
When a sonic boom is generated by a meteor or an aircraft
The comparison shows that lidar can resolve several wake properties while acoustic, seismic, and optical methods add broader path information.
LIDAR systems provide detailed information on velocity, temperature, particle velocity, and atmospheric composition
Source Material & Evidence
Research Map
Lines appear only when two entities share a row-level source claim or dated timeline event. Unconnected nodes remain visible without implying a relationship.