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Defense Intelligence Reference Document High-Frequency Gravitational Wave Communications
Defense Intelligence Agency · 57 pages · text from the file's own layer
This Defense Intelligence Reference Document was prepared by the Defense Intelligence Agency under its Advanced Aerospace Weapon System Applications (AAWSA) program, is dated 6 April 2010 and is part of a series of advanced technology reports produced in FY 2009. It reviews proposed laboratory generators and detectors of high-frequency gravitational waves for communications. It favors an infrared-excited molecules transmitter and the Li-Baker detector, estimating about 1.9 million bits per second over 7,000 km through the Earth. It also discusses timing standards and interplanetary navigation uses.
“Masse”14 pages
- p. 4 …Change in Centrifugal Force of Orbiting Masses, .dfct, Replaced by Change
in Tangential Force, Aft, to…
- p. 5 …cannot be shielded or shadowed by planetary masses. Plasma interference
seen at planetary entry would be…
- p. 8 …Change in Centrifugal Force of Orbiting Masses, b.fc1, Replaced by Change in Tangential Force,
4ft…
- p. 9 …as the particles move through a target mass. The usual difficulty with
HFGWs generated by nuclear…
- p. 10 …to an individual slice, P and its
mass, m would be both one hundredth of their…
- p. 13 …radiation pattern for a pair of orbiting
masses.
GW
l
I
T
GW
Figure 4. Radiation…
- p. 14 …The mass density of
pentane is divided by its molecular mass and that gives the density…
- p. 17 …In 1995 Tobar
characterized multi-mode resonant-mass HFGW detectors and three years later in 1998…
- p. 22 …E/c2 may be substituted for mass in an energy only system. This
is depicted in…
- p. 36 …as strongly
affected by the presence of mass. Such a differential propagation delay comparison
(between RF…
- p. 41 …The concept is that the mass essentially "rolls" down a "hill"
produced by the static g…
- p. 47 …V. (2009a), "Lessons for Energy Resonance HFGW Detector Designs
Learned from Mass Resonance and Interferometric LFGW…
- p. 48 …Tobar, M, 1729-1736 E. (1995), "Characterizing multi-mode resonant-mass
gravitational wave detectors," Journal of…
- p. 49 …pairs of oppositely jerking at one-time mass elements, integer
power of the generated gravitational waves…
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Mirrors
Position of
focused GW
generated
IR monomode waveguide
formed by active material
High power IR source
Figure 3. Circular Resonator Geometry Using Infrared Excitation
Analogous to Figure 2, we see in Figure 4 the radiation pattern for a pair of orbiting
masses.
GW
l
I
T
GW
Figure 4. Radiation Pattern Calculated by Landau and Lifshitz (1975)
Next consider a number N of such orbit planes stacked one on top of another with the
gravitational-wave (GW) radiation growing flux (Wm·2) proportional to N2 as the GW
moves up the axis of the N orbit planes as in Figure 5.
8
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