DIRD_21-DIRD_High-Frequency_Gravitational_Wave_Communications.pdf

UNCLASSIFIED / /POR“OPPECERE SE Onl Defense Intelligence Reference Document zz Acquisition Threat Support 6 April 2010 ICOD: 1 December 2009 DIA-08-1004-005 High-Frequency Gravitational Wave Communications UNCLASSIFIED / /@@R-@BELGLALLIS EON IY cm

UNCLASSIFIED / / P@R-@PEtGEh-UGE.@alLAem High-Frequency Gravitational Wave Communications Prepared by: (b\(3):10 USC 424 v Verense intelligence Agenc Author: (b)(6) Administrative Note COPYRIGHT WARNING: Further dissemination of the photographs in this publication is not authorized. This product is one in a series of advanced technology reports produced in FY 2009 under the Defense Intelligence Agency, |(b)(3):10 USC 424 Advanced Aerospace Weapon System Applications (AAWSA) Program. Comments or questions pertaining to this document should be addressed to [(b)(3):10 USC 424:(by6 , AAWSA Program…

UNCLASSIFIED / /SQR2eQERtGRAE-USE-ONE?Y Contents SUMIMALY «ve cceneeneeennecnesreenennnenecanenenencuasanenseanen wenazaneuenanas sua bsnaneneesuaneuenscesausrecanesenaeczece v 1.0 Introduction 2... .cccecceee eee eee ee ce ee eee ee essences eee eee eee 1 1.1 Ti trod ction .......0.cccecesecesesesccecusecesuversvenuseceseceserscuvavesesuresusenasesesevesenesesevuseses 1 1.2 Definition of High-Frequency Gravitational Waves. .....cccscsessereccrenussvererunssrae 1 2.0 HF GW Communications ....ccc.ccenctenenesenenscananenenenenenenenenanensneneuananenaneeananenanenenananen 2 2.1 HFGW Generators …

UNCLASSIFIED / /=@R-0FFIGEHEUSEP ONE 4.5 2050 and Beyond ......ccccscccncccneneceecncscuecesenenenenens neeenens seen seneneneneceusavaueunenenenes 37 5.0 Acknowledgements ....... ve pecevasecsvevusacevesasecevavususvecesesusenepecssesecusccusssnoceeresieuevser 37 6.0 REFEreNnCeS ...cserecererecususeess a vavepuseveveperesesenenesenesarer avevane pe veseseneveseseserenes evevesese verse OF Appendix A: Nomenclature ......ccccncnsnsscscsenensnenenenenenesenens nanenananenenananens aenenaeenanenancaes 44 Appendix B: Li-Baker HFGW Detector.....c.000 a nenenauenanenanacens na rasenanananansnsuensca…

UNCLASSIFIED / / POR'OPPIETAE USE One High-Frequency Gravitational Wave Communications Summary Fourteen laboratory high-frequency gravitational wave (HFGW) generators (or transmitters) have been proposed in the past 45 years in peer-reviewed journal articles, The most promising laboratory HFGW generators are those that utilize very large numbers of sub-microscopic radiation elements. The Piezoelectric Approach to HFGW generation is best for the proof-of- concept test and the proposed [R-excited Molecules Approach is best for an operational communications HFGW transmitter. Ten different HFGW de…

UNCLASSIFIED / s2@R-@551GhOL-UGE-OMiAGe 1.0 Introduction 1.1 INTRODUCTION Of the applications of high-frequency gravitational waves (HFGWs), communication appears to be the most important and most immediate. Gravitational waves have a very low cross section for absorption by normal matter, so high-frequency waves could, in principle, carry significant information content with effectively no absorption unlike electromagnetic (EM) waves. Multi-channel HFGW communications can be both point- to-point (for example, to deeply submerged submarines) and point-to-multipoint, like cell phones. HFGWs pas…

UNCLASSIFIED / 420.2e@-EEbGPRUSE-ONEY 2.0 HFGW Communications Consider the case of a single point-to-point two station full duplex communication system, as is represented in Figure 1. Such a system is often characterized as a single data link, and requires two transmitters, one at each end, and two receivers, one at each end. To avoid self-interference the link in one direction often uses a frequency of radiation different than the link in the opposite direction. Full Duplex Communication Link Using Gravitational Wave Generators and Sensors Station 1 Station 2 1 GW Generator i GW Sensor GW Gen…

UNCLASSIFIED / ®@R-@2P2tGhtE-USEONEY= rotating rods, laboratory HFGW generation, and so forth is based upon the “jerk” or shake of mass (time rate of change of acceleration) and is derived by Baker (2006) as P = 1.76x10°°? (2rAf/At)? W (1) where P is the power of the GWs, W; r is the distance between two masses, m; Af is a change in force, N; over the time interval At, s; that is, the jerk or shake of the two masses, such as the change in centrifugal force vector with time; for example, as masses move around each other on a circular orbit. Figure 2 describes that situation. Please recognize, h…