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Table of Contents

• ↓ Decoding the Roman Space Telescope
• ↓ On matched filtering in the presence of carrier frequency offset
• ↓ X-engine correlator on a Ryzen NPU
• ↓ Tianwen-1 safe mode telemetry
• ↓ ORI’s lunar descent CTF
• ↓ Tianwen-2 low data rate telemetry
• ↓ Top Alternatives to destevez.net

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"Scientific & Technical Amateur Radio — Home of EA4GPZ / M0HXM"

"The Nancy Grace Roman Space Telescope is a NASA space telescope that carries a wide field instrument with a 300.8 megapixel visible and near-infrared sensor that provides a sensitivity comparable to Hubble with a field of view 100 times larger, and a coronagraph instrument with a camera and spectrometer used to detect and study exoplanets. It will be stationed at the Sun-Earth L2 Lagrange point. The spacecraft was launched on 2026-08-30 on a Falcon Heavy from Kennedy Space Center."

"The spacecraft uses S-band for TT&C and Ka-band to transmit science data. I made an observation of the S-band downlink with two antennas from the Allen Telescope Array 18 hours after launch. In this post I comment on the observation and decode the telemetry. Detailed analysis of the telemetry is left for a future post."

"As usual, I have published the IQ data for this observation in Zenodo, in the dataset Recording of Roman Space Telescope S-band telemetry with the Allen Telescope Array shortly after launch."

Key Topics & Focus Areas for destevez.net:

Decoding the Roman Space Telescope

On matched filtering in the presence of carrier frequency offset

X-engine correlator on a Ryzen NPU

Tianwen-1 safe mode telemetry

ORI’s lunar descent CTF

Tianwen-2 low data rate telemetry