درباره ما
ITU-R REPORT M.1169
Sea surface multipath effects in the aeronautical mobile-satellite service
Year: 1990
Abstract: Introduction
Multipath, especially sea surface-reflected multipath, is a significant parameter to be considered in the design of an aeronautical mobile-satellite system in the 1.5/1.6 GHz bands. The new information contained in section 3 of this Report reconfirms the results of previous experiments and extends the multipath characterization investigations undertaken.
A number of factors related to the potential impact of sea-reflected multipath on aeronautical mobile-satellite communications made the characterization of this parameter a principal subject for early experimental investigation, which began in the early 1970s. The factors included:
1) the anticipated power level of the reflected signal relative to the direct path signal;
2) the characteristics of the multipath signal; and
3) the relative inability of aircraft antennas to discriminate the sea reflected signal (especially for low elevation angles and for broad beamwidth, relatively inexpensive low gain antennas).
Section 4 of this Report contains some early information on the operational performance of one phased array aircraft antenna installation with respect to the impact of sea surface multipath effects.
Multipath, especially sea surface-reflected multipath, is a significant parameter to be considered in the design of an aeronautical mobile-satellite system in the 1.5/1.6 GHz bands. The new information contained in section 3 of this Report reconfirms the results of previous experiments and extends the multipath characterization investigations undertaken.
A number of factors related to the potential impact of sea-reflected multipath on aeronautical mobile-satellite communications made the characterization of this parameter a principal subject for early experimental investigation, which began in the early 1970s. The factors included:
1) the anticipated power level of the reflected signal relative to the direct path signal;
2) the characteristics of the multipath signal; and
3) the relative inability of aircraft antennas to discriminate the sea reflected signal (especially for low elevation angles and for broad beamwidth, relatively inexpensive low gain antennas).
Section 4 of this Report contains some early information on the operational performance of one phased array aircraft antenna installation with respect to the impact of sea surface multipath effects.
-
Statistics
ITU-R REPORT M.1169
Show full item record
| contributor author | ITU-R - International Telecommunication Union/ITU Radiocommunication Sector | |
| date accessioned | 2017-09-04T18:19:46Z | |
| date available | 2017-09-04T18:19:46Z | |
| date copyright | 01/01/1990 | |
| date issued | 1990 | |
| identifier other | HUSEUCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=autho47037D8369B/handle/yse/202405 | |
| description abstract | Introduction Multipath, especially sea surface-reflected multipath, is a significant parameter to be considered in the design of an aeronautical mobile-satellite system in the 1.5/1.6 GHz bands. The new information contained in section 3 of this Report reconfirms the results of previous experiments and extends the multipath characterization investigations undertaken. A number of factors related to the potential impact of sea-reflected multipath on aeronautical mobile-satellite communications made the characterization of this parameter a principal subject for early experimental investigation, which began in the early 1970s. The factors included: 1) the anticipated power level of the reflected signal relative to the direct path signal; 2) the characteristics of the multipath signal; and 3) the relative inability of aircraft antennas to discriminate the sea reflected signal (especially for low elevation angles and for broad beamwidth, relatively inexpensive low gain antennas). Section 4 of this Report contains some early information on the operational performance of one phased array aircraft antenna installation with respect to the impact of sea surface multipath effects. | |
| language | English | |
| title | ITU-R REPORT M.1169 | num |
| title | Sea surface multipath effects in the aeronautical mobile-satellite service | en |
| type | standard | |
| page | 9 | |
| status | Active | |
| tree | ITU-R - International Telecommunication Union/ITU Radiocommunication Sector:;1990 | |
| contenttype | fulltext |