GPS/GLONASS for Aviation Use

Wonder how this turned out?


http://www.flightglobal.com/flightpdfarchive/1990/1990%20-%201666.PDF

http://www.flightglobal.com/flightpdfarchive/1990/1990%20-%201667.PDF

"News that Honeywell and Northwest Airlines are to develop a system
capable of receiving both US and Soviet
navigation-satellite signals (Flight, 30 May-5 June) has reawakened
interest in just how far the technology can be pushed to replace
ground-based navigation and landing aids.

Capt Bob Buley, manager of flight standards and project development at
Northwest . . . who chairs the ATA working group examining MLS, says:
' . . . We believe we will be able to get down to Category I
certification by the end of 1991 . . . ' "


The 30 May - 5 June story referenced above:

http://www.flightglobal.com/flightpdfarchive/1990/1990%20-%201526.PDF

http://www.flightglobal.com/flightpdfarchive/1990/1990%20-%201527.PDF

"Honeywell has clinched an agreement with the Soviet Union to develop
a new civilian satellite navigation system which will link the Soviet
global navigation satellite system, Glonass, and the US Navstar Global
Positioning (GPS) system for the first time.

. . . It is understood that a memorandum of understanding (MoU)
between Honeywell and Soviet government agencies has already been
signed, and that the deal includes Northwest Airlines . . . the MoU
apparently sanctions the release of detailed information about Soviet
Navsat signals to the West for the first time, clearing the way for
development of a dual GPS/Glonass receiver.

. . . Each satellite also radiates non-encrypted signals which may be
used to obtain a position fix within 100m . . . although the Pentagon
last year discussed cancelling civilian access to GPS."

If it were not to references to the 'Soviet Union' and GPS accuracies
indicative of Selective Availability I'd believe those articles were
written yesterday.

--- CHAS