NDLI: Ionospheric effects on radio communication and ranging pulses

Content Provider	IEEE Xplore Digital Library
Author	Yeh, K. Liu, C.
Copyright Year	1963
Abstract	Transionospheric radio pulses used for communication and ranging purposes are modified by propagation effects arising from dispersion and scattering. To describe these effects quantitatively it is convenient to use the concept of temporal moments. The zeroth temporal moment is proportional to energy flow in the wave and is constant in a dissipationless ionosphere under the forward scatter approximation. The first temporal moment is related to the mean arrival time which can be arranged as a series consisting of terms proportional tof_{c}^{-2n}, n = 0, 1, 2, ..., wheref_{c}is the carrier frequency. Here then = 0term in this series representation of the first temporal moment is just the free-space transit time which can be related simply to the geometric distance, a quantity required with great precision in ranging applications. Then = 1term, which is proportional to the electron content, has been investigated by various investigators in connection with navigational satellite applications. Then = 2term in the expansion of the first temporal moment given in this paper comes about through dispersion, finite bandwidth effect, and scattering from random irregularities; the numerical values of each of these terms are computed for a Chapman layer. The second temporal moment is related to the mean square pulsewidth. It is shown that an amplitude modulated pulse at a carrier frequency of 100 MHz may be stretched up to several hundred fold in width by dispersion and scattering, but such an effect diminishes rapidly in importance as the carrier frequency is raised. These results provide useful information to designers of satellite-based communication and ranging systems.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	747
Ending Page	751
Page Count	5
File Size	500530
File Format	PDF
ISSN	0018926X
Volume Number	27
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1979-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio communication Scattering Dispersion Frequency Space vector pulse width modulation Pulse width modulation Ionosphere Electrons Artificial satellites Bandwidth
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Ionospheric dispersion of electromagnetic pulses

Mean arrival time and mean pulsewidth of signals propagating through a dispersive and random medium

Ionospheric pulse time dispersion including effects of Earth's magnetic field

Measurement of Dispersion Effects on Narrow RF Pulses (Correspondence)

Ionospheric dispersion of an FM electromagnetic pulse

Calculation of the compression of microwave pulses by the ionosphere

Study of ultrawide-band transmission in the extremely high frequency (EHF) band

Synchronization over fading dispersive channels

Activ-Passive mode locking of an Nd:phosphate glass laser pusing #5 saturable dye

Ionospheric effects on radio communication and ranging pulses

Similar Documents

Ionospheric dispersion of electromagnetic pulses

Mean arrival time and mean pulsewidth of signals propagating through a dispersive and random medium

Ionospheric pulse time dispersion including effects of Earth's magnetic field

Measurement of Dispersion Effects on Narrow RF Pulses (Correspondence)

Ionospheric dispersion of an FM electromagnetic pulse

Calculation of the compression of microwave pulses by the ionosphere

Study of ultrawide-band transmission in the extremely high frequency (EHF) band

Synchronization over fading dispersive channels

Activ-Passive mode locking of an Nd:phosphate glass laser pusing #5 saturable dye

Ionospheric effects on radio communication and ranging pulses