Harmonization, mobility management, and fixed-mobile convergence: Studies in the ITU-T special study group on “IMT-2000 and beyond”

2002 ◽  
Vol 4 (4) ◽  
pp. 314-320
Author(s):  
Frederic Delmond ◽  
Young Kyun Kim ◽  
Raj Pandya ◽  
Bruce Pettitt ◽  
Jean-Claude Samou
Keyword(s):  
Mobility Management ◽  
Special Study Group ◽  
Study Group ◽  
Special Study ◽  
Fixed Mobile Convergence

ASSESSMENT OF ESTIMATION METHODS AND FIELD PROCEDURES FOR INERTIAL NETWORKS

1986 ◽  
Vol 40 (3) ◽  
pp. 261-276
Author(s):  
D. A. G. Arden ◽  
Calgary Alberta ◽  
K. P. Schwarz
Keyword(s):  
International Association ◽  
Cost Savings ◽  
Estimation Methods ◽  
Ground Control ◽  
Special Study Group ◽  
Marginal Effect ◽  
Study Group ◽  
Special Study ◽  
Dense Network ◽  
Smoothing Process

Inertial field procedures and postmission adjustment methods were compared and tested in the Gimli test network in southern Manitoba. This network has excellent GPS-derived ground control and a dense network of inertial traverses that make the testing of different alternatives possible. It has also been selected as one of the two test networks of the Special Study Group 1.77 of the International Association of Geodesy on the “Utilization of Inertial Techniques for Geodesy” and this paper is a contribution to the work of this group. Of the methods compared, adjustment of filtered data gives the best results. Adjustment of smoothed traverses suffers from the effects of sytematic errors introduced to the data by the smoothing process. Neither of the field procedures tested was found to be superior to the others. However, considerable savings in measurement time and costs could be achieved by using single runs along the peripheral traverses instead of the usual double runs. Cost savings of up to 20 percent are possible with only a marginal effect on the accuracy.

Special study group No 22

1968 ◽  
Vol 90 (1) ◽  
pp. 393-399
Author(s):  
R. Sigl
Keyword(s):  
Special Study Group ◽  
Study Group ◽  
Special Study

F.A.A. Experience Gained in the Use of Digital Computation

1961 ◽  
Vol 65 (606) ◽  
pp. 403-407
Author(s):  
J. L. Anast
Keyword(s):  
Traffic Control ◽  
Air Traffic Control ◽  
Air Traffic ◽  
Special Study Group ◽  
Study Group ◽  
Automatic Data ◽  
Digital Computation ◽  
The World ◽  
Processing Techniques ◽  
High Degree

The application of automatic data processing techniques to air traffic control has been espoused by both operational and research and development groups dealing in air traffic control throughout the world. As far back as 1947, in the U.S.A., the Special Study Group, SC-31 of the Radio Technical Commission for Aeronautics suggested that a high degree of automation be applied—including rigid control of all flights and their times of arrival.

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