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Defense Intelligence Reference Document Invisibilty Cloaking Theory And Experiments

Defense Intelligence Agency · 29 pages · text from the file's own layer

This Defense Intelligence Reference Document, dated 2 March 2010 and produced by the Defense Intelligence Agency under its Advanced Aerospace Weapon System Applications (AAWSA) Program, is a technical survey of invisibility. It covers camouflage, including stealth aircraft and optical camouflage, then transparency, cloaking by coordinate transformation, metamaterials and non-Euclidean broadband cloaking. It concludes that perfect cloaking is impossible but imperfect microwave cloaks are within reach of present technology. Whether cloaking will work at visible wavelengths remains unclear.

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“Works”6 pages

  • p. 6 …How does it work? In radar, electromagnetic microwaves are emitted by a source, and their reflection…
  • p. 7 …In addition, optical camouflage works only in one direction; seen from the side, the person is…
  • p. 9 …So, in practice, these forms of transparency will work only for small objects and for small…
  • p. 10 …9FFHil.«tk Wfili 8Hk'/ Cloaking Cloaking 4, 5 is a universal strategy for invisibility that works…
  • p. 16 …understanding of their workings. The Romans most probably never understood why ruby glass is neither golden…
  • p. 20 …JO The demonstrated microwave-cloaking device only works correctly for microwave radiation of a specific frequency…
2 March 2010
ICOD: 1 December 2009
DIA-08-1003-001
UNCLASSIFIED/ ;/

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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 29 pages are in the text index: search them above, or from the library's search.