東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Analyses for a Modernized GNSS Radio...

Griggs, Erin R.

Linked to FindBook

Google Book

Amazon

博客來

Analyses for a Modernized GNSS Radio Occultation Receiver.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Analyses for a Modernized GNSS Radio Occultation Receiver./
Author:	Griggs, Erin R.
Description:	163 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
Contained By:	Dissertation Abstracts International76-10B(E).
Subject:	Aerospace engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3704709
ISBN:	9781321773019

Analyses for a Modernized GNSS Radio Occultation Receiver.
Griggs, Erin R.

Analyses for a Modernized GNSS Radio Occultation Receiver. - 163 p.

Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2015.

Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that exploits existing navigation signals to make global, real-time observations of the Earth's atmosphere. A specialized RO receiver makes measurements of signals originating from a transmitter onboard a GNSS spacecraft near the Earth's horizon. The radio wave is altered during passage through the Earth's atmosphere. The changes in the received signals are translated to the refractivity characteristics of the intervening medium, which enable the calculation of atmospheric pressure, temperature, and humidity.

ISBN: 9781321773019Subjects--Topical Terms:

1002622
Aerospace engineering.

Analyses for a Modernized GNSS Radio Occultation Receiver.
LDR:03096nmm a2200313 4500 001 2067484
005 20160411144743.5
008 170521s2015 ||||||||||||||||| ||eng d
020 $a 9781321773019
035 $a (MiAaPQ)AAI3704709
035 $a AAI3704709
040 $a MiAaPQ $c MiAaPQ
100 1 $a Griggs, Erin R. $3 3182335
245 1 0 $a Analyses for a Modernized GNSS Radio Occultation Receiver.
300 $a 163 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
500 $a Adviser: Dennis M. Akos.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2015.
520 $a Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that exploits existing navigation signals to make global, real-time observations of the Earth's atmosphere. A specialized RO receiver makes measurements of signals originating from a transmitter onboard a GNSS spacecraft near the Earth's horizon. The radio wave is altered during passage through the Earth's atmosphere. The changes in the received signals are translated to the refractivity characteristics of the intervening medium, which enable the calculation of atmospheric pressure, temperature, and humidity.
520 $a Current satellite missions employing GNSS RO have provided invaluable and timely information for weather and climate applications. Existing constellations of occultation satellites, however, are aging and producing fewer quality measurements. Replacement fleets of RO satellites are imperative to sustain and improve the global coverage and operational impact achieved by the current generation of RO satellites. This dissertation describes studies that facilitate the development of next generation RO receivers and satellite constellations. Multiple research efforts were conducted that aim to improve the quantity and quality of measurements made by a future satellite-based RO collection system.
520 $a These studies range in magnitude and impact, and begin with a receiver development study using ground-based occultation data. Future RO constellations and collection opportunities were simulated and autonomous occultation prediction and scheduling capabilities were implemented. Finally, a comprehensive study was conducted to characterize the stability of the GNSS atomic frequency standards. Oscillator stability for a subset of satellites in the GNSS was found to be of insufficient quality at timescales relevant to RO collections and would degrade the atmospheric profiling capabilities of an RO system utilizing these signals. Recommendations for a high-rate clock correction network are proposed, which provides significant improvement to the fractional errors in the derived refractivity, pressure, and temperature values caused by the oscillator instabilities.
590 $a School code: 0051.
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Remote sensing. $3 535394
650 4 $a Atmospheric sciences. $3 3168354
690 $a 0538
690 $a 0799
690 $a 0725
710 2 $a University of Colorado at Boulder. $b Aerospace Engineering. $3 1030473
773 0 $t Dissertation Abstracts International $g 76-10B(E).
790 $a 0051
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3704709