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Terahertz Relative Positioning : = An Alternative to GPS for Aircraft Flying in Formation.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Terahertz Relative Positioning :/
Reminder of title:	An Alternative to GPS for Aircraft Flying in Formation.
Author:	Parker, John Scott.
Description:	1 online resource (244 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
Subject:	Mechanical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780355342529

Terahertz Relative Positioning : = An Alternative to GPS for Aircraft Flying in Formation.
Parker, John Scott.

Terahertz Relative Positioning :An Alternative to GPS for Aircraft Flying in Formation. - 1 online resource (244 pages)

Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.

Thesis (Ph.D.)--Tufts University, 2017.

Includes bibliographical references

A new terahertz-frequency (THz) relative positioning capability is developed and demonstrated in simulation for the formation flight of cargo aircraft. Formation flight is used by the military for a wide variety of applications. This work specifically considers the precision airdrop of personnel and supplies over hostile territory. During these operations, aircraft must maintain precise relative positioning; however, the current technology is flawed because radio signals are easy to detect and GPS is easily jammed. We propose using THz signals, the unique propagation properties of which provide both stealth and robustness to jamming. THz is a nascent technology with growing interest, particularly for high-speed wireless communications. To the author's knowledge, this is the first exploration of its potential for positioning. This dissertation develops methods for the measurement of range and bearing angle from the THz signal and a communication scheme to transmit altitude measurements over the THz link. These measurements are then fused together in a Kalman filter to estimate the aircrafts' relative positions. Results from an integrated simulation demonstrate that the THz system is capable of precisely measuring the position, with cross-track errors of 11 m, two-sigma, at separations of 2 km, well within the 50 m requirements for the precision airdrop application.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355342529Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Terahertz Relative Positioning : = An Alternative to GPS for Aircraft Flying in Formation.
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100 1 $a Parker, John Scott. $3 1184895
245 1 0 $a Terahertz Relative Positioning : $b An Alternative to GPS for Aircraft Flying in Formation.
264 0 $c 2017
300 $a 1 online resource (244 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
500 $a Adviser: Jason Rife.
502 $a Thesis (Ph.D.)--Tufts University, 2017.
504 $a Includes bibliographical references
520 $a A new terahertz-frequency (THz) relative positioning capability is developed and demonstrated in simulation for the formation flight of cargo aircraft. Formation flight is used by the military for a wide variety of applications. This work specifically considers the precision airdrop of personnel and supplies over hostile territory. During these operations, aircraft must maintain precise relative positioning; however, the current technology is flawed because radio signals are easy to detect and GPS is easily jammed. We propose using THz signals, the unique propagation properties of which provide both stealth and robustness to jamming. THz is a nascent technology with growing interest, particularly for high-speed wireless communications. To the author's knowledge, this is the first exploration of its potential for positioning. This dissertation develops methods for the measurement of range and bearing angle from the THz signal and a communication scheme to transmit altitude measurements over the THz link. These measurements are then fused together in a Kalman filter to estimate the aircrafts' relative positions. Results from an integrated simulation demonstrate that the THz system is capable of precisely measuring the position, with cross-track errors of 11 m, two-sigma, at separations of 2 km, well within the 50 m requirements for the precision airdrop application.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
650 4 $a Communication. $3 556422
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
690 $a 0459
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Tufts University. $b Mechanical Engineering. $3 1184896
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10232468 $z click for full text (PQDT)