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

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Terahertz Relative Positioning :/
其他題名:	An Alternative to GPS for Aircraft Flying in Formation.
作者:	Parker, John Scott.
面頁冊數:	1 online resource (244 pages)
附註:	Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
標題:	Mechanical engineering. -
電子資源:	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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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
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690 $a 0459
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710 2 $a Tufts University. $b Mechanical Engineering. $3 1184896
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