Add VZLUSAT-2 to SatNOGS DB

Hi,

I'd like to request addition of VZLUSAT-2 to the SatNOGS database. Please let me know if any of the information below is incomplete or needs clarification.

Satellite name

VZLUSAT-2

Description

VZLUSAT-2 is an upcoming 3U CubeSat by the Czech Aerospace Research Center scheduled for launch with SpaceX on 18th December 2020. The primary payload of the mission are two experimental Earth observation cameras, secondary payloads include radiation monitoring instruments, gamma ray burst detectors and X-ray detectors. IARU frequency coordination can be found at http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=749.

Image

Transmitter 1

Transmitter Name

VZLUSAT-2 is using AX100 UHF radio in mode 5: ASM+Golay mode (0x930B51DE sync word, Golay length field, RS(255, 223) error coding).

Type

Transceiver

Service

Amateur, Earth Exploration, Space Research

Downlink Frequency

437325000 Hz

Downlink Mode

GMSK 1k2/4k8/9k6 AX100 mode 5 beacon and data downlink

Dowlink Encoding

AX100 ASM+Golay encoding using Cubesat Space Protocol. Beacon is a CSP packet, payload specification is the following (using gr-satellites telemetry parser format from https://github.com/daniestevez/gr-satellites/pull/172 - SatNOGS decoder to be added):

Beacon = Struct(
    Padding(8),
    'obc_timestamp' / Int32ub,
    'obc_boot_count' / Int32ub,
    'obc_reset_cause' / Int32ub,
    'eps_vbatt' / Int16ub,
    'eps_cursun' / Int16ub,
    'eps_cursys' / Int16ub,
    'eps_temp_bat' / Int16sb,
    'radio_temp_pa' / LinearAdapter(10, Int16sb),
    'radio_tot_tx_count' / Int32ub,
    'radio_tot_rx_count' / Int32ub
    )

Uplink Frequency

437325000 Hz

Uplink Mode

GMSK 1k2 AX100 mode 5

Uplink Encoding

AX100 ASM+Golay encoding