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Questionnaire concerning of biases for undifferenced ambiguity
resolution:
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Natural Resources Canada Products
1) Final GPS-Only
2) Final Glonass/Rapid GPS/Ultra-Rapid GNSS
3) Real-Time

1)*** FOR FINAL GPS-ONLY SOLUTION ***
    ===========================
Your name and institution:	Brian Donahue, Natural Resources Canada.
Contact email address(es):	bdonahue@nrcan.gc.ca

Primary reference/paper for your approach (URL address or email
attached):

List of bias types considered and their temporal resolution:

None

Clock corrections are generated at intervals of:

30 seconds


Ambiguity resolution for:
[ ] undifferenced observations
[ ] between-satellite observations
[x] other: double differenced observations


How do you select GPS code observable types (to be used for a specific
station)
if P1 and C1, or P2 and C2 are available?

Correct C1 to P1 using cc2noncc and CODE 30 day averages, ignore C2.


Do you generate integer phase clock corrections on a regular/operational

basis?
[ ] Yes
[ ] No, but test results (in clock-RINEX) would be available for:

No


Recommendations for PPP users of your integer phase clock product:

No special requirements.


Do you have corresponding bias results available (in ASCII form)?
[ ] Yes
[x] No

Are there any specialties concerning your integer phase clock product?

Extra question: Do you have experience/plans in extending your approach
to
GLONASS observations?
[X] No
[ ] Yes, please specify:


2) *** FOR FINAL GLONASS SOLUTION and RAPID/ULTRA RAPID GPS SOLUTION ***
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Your name and institution: Yves Mireault, Natural Resources Canada
Contact email address(es):ymireaul@nrcan.gc.ca

Primary reference/paper for your approach (URL address or email
attached):
NONE!


List of bias types considered and their temporal resolution:
None!


Clock corrections are generated at intervals of:
300s then interpolated at 30s

Ambiguity resolution for:
[ ] undifferenced observations
[ ] between-satellite observations
[X] other: NONE!


How do you select GPS code observable types (to be used for a specific
station)
if P1 and C1, or P2 and C2 are available?
P1 first then C1. No C2.
GLONASS C1 observations are *NOT* "converted" to P1 using the 
CC2NONCC tool as it is the case for GPS.


Do you generate integer phase clock corrections on a regular/operational
basis?
[ ] Yes
[X} No, but test results (in clock-RINEX) would be available for:
NONE!

Recommendations for PPP users of your integer phase clock product:
We don't generate integer phase clock product!


Do you have corresponding bias results available (in ASCII form)?
[ ] Yes
[X] No

Are there any specialties concerning your integer phase clock product?

We don't generate integer phase clock product!

Extra question: Do you have experience/plans in extending your approach
to
GLONASS observations?
[X] No
[ ] Yes, please specify:


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3) Real-Time Products

Your name and institution:	Paul Collins, Natural Resources Canada.
Contact email address(es):	pcollins@nrcan.gc.ca

Primary reference/paper for your approach (URL address or email
attached):

Collins, P., S. Bisnath, F. Lahaye and P. Heroux (2010). "Undifferenced
GPS Ambiguity Resolution Using the Decoupled Clock Model and Ambiguity
Datum Fixing." J. Inst. of Navigation, Vol.57, No.2, pp.123-135.

List of bias types considered and their temporal resolution:

Melbourne-Wubbenna combination of code and phase delays estimated as
white-noise.


Clock corrections are generated at intervals of:

Two seconds in real-time. Decimated to 30sec for RINEX file.


Ambiguity resolution for:
[X] undifferenced observations
[ ] between-satellite observations
[ ] other:


How do you select GPS code observable types (to be used for a specific
station)
if P1 and C1, or P2 and C2 are available?

Correct C1 to P1, ignore C2.


Do you generate integer phase clock corrections on a regular/operational

basis?
[ ] Yes
[X] No, but test results (in clock-RINEX) would be available for:

March 2008, and on an on-going basis shortly...


Recommendations for PPP users of your integer phase clock product:

No special recommendations provided the same observation model is
implemented.


Do you have corresponding bias results available (in ASCII form)?
[X] Yes
[ ] No

Are there any specialties concerning your integer phase clock product?

No assumptions about bias stability are required in either the satellite
or receiver equipment.

Extra question: Do you have experience/plans in extending your approach
to
GLONASS observations?
[X] No
[ ] Yes, please specify:

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