Changeset 1301 in ntrip for trunk/BNS

Timestamp:

Dec 15, 2008, 2:57:50 PM (16 years ago)

Author:

weber

Message:

* empty log message *

File:

• trunk/BNS/bnshelp.html (modified) (1 diff)

trunk/BNS/bnshelp.html

@@ -279 +279 @@
 <p>
 BNS allows to configure two Ephemeris Corrections streams refering do different reference systems for upload to different NTRIP broadcasters. You may use this functionality for parallel support of a backup NTRIP broadcaster or for simultaneous support of two reference systems.
+</p>
+
+<p>
+When using clocks from Broadcast Ephemeris (with or without corrections) and clocks from SP3 files in the same application, it is important to understand that Broadcast Ephemeris clocks - according to the Interface Control Documents (ICD) - are corrected for the 2nd-order relativistic effect whereas clocks from SP3 files are not. The 2nd-order relativistic effect is a priodic time correction defined as -2 (R * V) / c^2 and includes the scalar product of satallite position and velocity divided by the speed of light raised to the second power. 
 </p>