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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.

  • p. 7 …I/ I (1 'I, 111c""'*'"" c..",..,.,<:1 ,.,.. ,.,,.,, ..... , ..... , ,t..- , ... ,,,,., The SecrN of Trana:parrnt Cloak Figure 3…
  • p. 9 …a) b) ( -L 0 L -L 0 L c) d) Figure 5. Complementary Media Invisibility Cloak…
  • p. 11 UNCLASSIFIED/;'f81il 8ffllil.l1k WE&i Si'llk>C This idea comes from Fermat's principle…
  • p. 18 …The first moderately bulk negatively refracting materials23, 24 were made only recently. "C ' The most severe…
  • p. 19 C UNCLASSIFIED/ ,erg A gfflliltlit ~81!! SHLY S;:imple ,. ----- !2£ f b '' ' Quartz lens? n C…
  • p. 22 UNCLASSIFIED//FIHl 8FFHil.l1k WE'lii 811L>C A B , C '' ,' ' WW'i1 1Ml~1 :/iili1…
  • p. 24 …space they enclose is hidden from sight. C Figure 20. Non-Euclidean Cloaking Device in Two…
  • p. 26 …X •..C •> 1, 0 "•0: •> j •0: Figure 23. Implementation of the Ground-Plate Cloak38 21…
  • p. 28 …Zhang, and C. T. Chan, Complementary Media Invisibility Cloak that Cloaks Objects at a Distance Outside…
  • p. 29 …Chen and C. T. Chan, Time delays and energy transport velocities in three dimensional ideal cloaking…
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.