Changeset 11134 in ntrip for trunk/BNC/src/bnchelp.html

Timestamp:

Oct 28, 2026, 10:05:43 AM (5 days ago)

Author:

stuerze

Message:

IIF shadow behaviour considerred in GPS attitude model

File:

• trunk/BNC/src/bnchelp.html (modified) (2 diffs)

trunk/BNC/src/bnchelp.html

@@ -5262 +5262 @@
   <pre>
   G attitude check G14 09:42:30-10:25:30: yaw difference to the model 362 deg, clock change vs. consensus 8.2 cm, predicted 10.7 cm (max 10.7 cm), slope 0.77, clock RMS 6.1 -> 2.0 cm: SSR yaw consistent with the clocks
-  G attitude check G25 07:53:00-08:51:30: yaw difference to the model 39 deg, clock change vs. consensus -9.8 cm, predicted -0.0 cm (max 1.2 cm), slope 1.84, clock RMS 5.9 -> 5.8 cm: clock change not explained by the yaw difference (the other ACs model this turn differently?)
 </pre>
   <p>
@@ -8379 +8378 @@
   <ul>
     <li><b>Computed</b> (default): BNC applies its own kinematic attitude model:
-      GPS noon/midnight turn manoeuvres (Kouba 2009/2015, Bar-Sever 1996),
+      GPS noon/midnight turn manoeuvres (Kouba 2009/2015, Bar-Sever 1996), with Block IIF satellites in the Earth's
+      shadow yawing at a constant rate from their yaw at shadow entry to the nominal yaw at shadow exit,
       GLONASS-M noon turns and midnight turns in the Earth's shadow (Dilssner et al. 2011), and
       Galileo / BDS orbit-normal mode switching (Kouba 2017, Dai et al. 2015, Steigenberger et al. 2018).</li>