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- Dec 8, 2008, 12:08:51 PM (16 years ago)
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trunk/BNS/bnshelp.html
r1284 r1288 220 220 <p><a name="co"><h4>4.6. Clocks & Orbits</h4></p> 221 221 <p> 222 BNS requires GNSS clocks and orbits in the IGS Earth-Centered-Earth-Fixed (ECEF) reference system in SP3 format. They can be provided by a real-time GNSS engine such as RTNet. In contrast to SP3 the required clocks have to be corrected for relativistic effects, namely the 2nd-order periodic time correction -2(R * V)c^2.222 BNS requires GNSS clocks and orbits in the IGS Earth-Centered-Earth-Fixed (ECEF) reference system in SP3 format. They can be provided by a real-time GNSS engine such as RTNet. In contrast to SP3, the incoming clocks must have been corrected for the 2nd-order relativistic effect. This 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. 223 223 </p> 224 224
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