Downlink Probability Density Functions for EOS-McMurdo Sound
The visibility times and communication link dynamics for the Earth Observations Satellite (EOS)-McMurdo Sound direct downlinks have been studied. The 16 day EOS periodicity may be shown with the Goddard Trajectory Determination System (GTDS) and the entire 16 day period should be simulated for repre...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1996
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/19960035776 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19960035776 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19960035776 2023-05-15T17:10:35+02:00 Downlink Probability Density Functions for EOS-McMurdo Sound Jackson, A. H. Christopher, P. Unclassified, Unlimited, Publicly available May 1996 application/pdf http://hdl.handle.net/2060/19960035776 unknown Document ID: 19960035776 Accession ID: 96N30515 http://hdl.handle.net/2060/19960035776 No Copyright CASI Communications and Radar Flight Mechanics/Estimation Theory Symposium 1996; 333-347; NASA-CP-3333 1996 ftnasantrs 2015-03-15T03:16:27Z The visibility times and communication link dynamics for the Earth Observations Satellite (EOS)-McMurdo Sound direct downlinks have been studied. The 16 day EOS periodicity may be shown with the Goddard Trajectory Determination System (GTDS) and the entire 16 day period should be simulated for representative link statistics. We desire many attributes of the downlink, however, and a faster orbital determination method is desirable. We use the method of osculating elements for speed and accuracy in simulating the EOS orbit. The accuracy of the method of osculating elements is demonstrated by closely reproducing the observed 16 day Landsat periodicity. An autocorrelation function method is used to show the correlation spike at 16 days. The entire 16 day record of passes over McMurdo Sound is then used to generate statistics for innage time, outage time, elevation angle, antenna angle rates, and propagation loss. The levation angle probability density function is compared with 1967 analytic approximation which has been used for medium to high altitude satellites. One practical result of this comparison is seen to be the rare occurrence of zenith passes. The new result is functionally different than the earlier result, with a heavy emphasis on low elevation angles. EOS is one of a large class of sun synchronous satellites which may be downlinked to McMurdo Sound. We examine delay statistics for an entire group of sun synchronous satellites ranging from 400 km to 1000 km altitude. Outage probability density function results are presented three dimensionally. Other/Unknown Material McMurdo Sound NASA Technical Reports Server (NTRS) McMurdo Sound |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Communications and Radar |
spellingShingle |
Communications and Radar Jackson, A. H. Christopher, P. Downlink Probability Density Functions for EOS-McMurdo Sound |
topic_facet |
Communications and Radar |
description |
The visibility times and communication link dynamics for the Earth Observations Satellite (EOS)-McMurdo Sound direct downlinks have been studied. The 16 day EOS periodicity may be shown with the Goddard Trajectory Determination System (GTDS) and the entire 16 day period should be simulated for representative link statistics. We desire many attributes of the downlink, however, and a faster orbital determination method is desirable. We use the method of osculating elements for speed and accuracy in simulating the EOS orbit. The accuracy of the method of osculating elements is demonstrated by closely reproducing the observed 16 day Landsat periodicity. An autocorrelation function method is used to show the correlation spike at 16 days. The entire 16 day record of passes over McMurdo Sound is then used to generate statistics for innage time, outage time, elevation angle, antenna angle rates, and propagation loss. The levation angle probability density function is compared with 1967 analytic approximation which has been used for medium to high altitude satellites. One practical result of this comparison is seen to be the rare occurrence of zenith passes. The new result is functionally different than the earlier result, with a heavy emphasis on low elevation angles. EOS is one of a large class of sun synchronous satellites which may be downlinked to McMurdo Sound. We examine delay statistics for an entire group of sun synchronous satellites ranging from 400 km to 1000 km altitude. Outage probability density function results are presented three dimensionally. |
format |
Other/Unknown Material |
author |
Jackson, A. H. Christopher, P. |
author_facet |
Jackson, A. H. Christopher, P. |
author_sort |
Jackson, A. H. |
title |
Downlink Probability Density Functions for EOS-McMurdo Sound |
title_short |
Downlink Probability Density Functions for EOS-McMurdo Sound |
title_full |
Downlink Probability Density Functions for EOS-McMurdo Sound |
title_fullStr |
Downlink Probability Density Functions for EOS-McMurdo Sound |
title_full_unstemmed |
Downlink Probability Density Functions for EOS-McMurdo Sound |
title_sort |
downlink probability density functions for eos-mcmurdo sound |
publishDate |
1996 |
url |
http://hdl.handle.net/2060/19960035776 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
McMurdo Sound |
geographic_facet |
McMurdo Sound |
genre |
McMurdo Sound |
genre_facet |
McMurdo Sound |
op_source |
CASI |
op_relation |
Document ID: 19960035776 Accession ID: 96N30515 http://hdl.handle.net/2060/19960035776 |
op_rights |
No Copyright |
_version_ |
1766067229448732672 |