2 hours ago
Last night's Chang'e 5.
@coastal8049 list:
Orbiter-B - 8463.7MHz (decoded)
Orbiter-A - 8571.2Mhz (detected)
Lander - 8455MHz (no signal)
AZ and EL offsets needed to correct SpaceTrack elements. As much as +7 deg AZ and -1.5 deg. EL. Offsets were changes before and after TCA. https://t.co/5CKAXPxevV
8 hours ago
More X-band wonders coming out of the lab today. A VE4MA choke ring made out Aluminum to reduce system weight. Next is the depolarizer and transition. Goal ultra light dish and feed for telescope mounting. https://t.co/1POcDAXFHe
16 hours ago
This is the high speed data downlink, 2.5MSym/s BPSK, CCSDS framed, but not using APIDs. Uses some custom protocol on VChan 38. It was very busy earlier, now it's mostly idling with some basic telemetry.
This looks like 8 channels of accelerometer data, some changes are visible: https://t.co/3LigSvKfqs https://t.co/0frT5rixkk
20 hours ago
Chang'e 5 Downlink on X-Band centred on 8455MHz, a lump of fast wide band data! https://t.co/Eye0cMFFCf
22 hours ago
Feed center check with laser bore sight in custom self-centering printed adapter plate!
Seems there is room for improvement.
WIll install some turnbuckle threaded rods to allow adjustment per feed leg. https://t.co/2N0hnpRgrh
Category Archives: GPS
Earth Scope Sensor at Mt. Lassen Volcanic National Park
Ran across something called “Earth Scope” on a recent visit to the Mt. Lassen Volcanic National Park. Some quick googling yielded: GPS geodesy provide complementary measurement systems for resolving strain-rate over the time period proposed for the Plate Boundary Observatory. … Continue reading
