Hi my friends,
I'm afraid I'm wrong, but it seems to me that the catalog number, therefore the tle of Zhuhai-1 1 (CAS-4A) and Zhuhai-1 2 (CAS-4B) are maybe inverted. Listening the CW beacon, the Doppler shift correction with fresh tle for Zhuhai-1 2 (CAS-4B) seems correct, but for his brother nr 1 (CAS-4A), it looks like the bird is a bit ahead the prediction : at the beginning of the pass we have to decrease manually the frequency to chase the bird, at about the half of the pass it's the opposite, we have to hold a little bit the frequency shift correction.
No ?
Have a nice day all !
J-P F5YG
I appologize...
Nico PA0DLO reminded me the post he sents on Sunday 18th 12:25 about the two tle inverted in SpaceTrack and Celestrak.
73 !
Jean-Pierre F5YG
On 20/06/2017 10:11, Jean-Pierre Godet wrote:
Hi my friends,
I'm afraid I'm wrong, but it seems to me that the catalog number, therefore the tle of Zhuhai-1 1 (CAS-4A) and Zhuhai-1 2 (CAS-4B) are maybe inverted. Listening the CW beacon, the Doppler shift correction with fresh tle for Zhuhai-1 2 (CAS-4B) seems correct, but for his brother nr 1 (CAS-4A), it looks like the bird is a bit ahead the prediction : at the beginning of the pass we have to decrease manually the frequency to chase the bird, at about the half of the pass it's the opposite, we have to hold a little bit the frequency shift correction.
No ?
Have a nice day all !
J-P F5YG
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Jean-Pierre Godet