Signals, spectra, calibration, and Milky Way products
A research-focused view of project observations, published transit-scan context, and future public data products.
Selected Results
What the observations show
Each result is summarized rather than republishing complete paper pages.
Signal Processing Result
What is shown: A raw spectrum stage in the H I observation workflow.
Why it matters: It places SDR acquisition and FFT-based spectral extraction at the center of the platform. The project is presented as a complete measurement chain, not only as a reflector build.
Source: Project lecture material; related signal-processing workflow is described in the 2025 IEEE publication.
PSU Transit Survey and Calibration Context
What is shown: Calibration and first survey products from the project lecture.
Why it matters: Transit observations connect time/frequency measurements to sky structure as Earth rotates through the beam. Published scans should be interpreted as normalized signal strength or relative H I response unless an absolute calibration is explicitly stated.
Source: Project lecture material; published transit-scan context - IEEE Antennas and Propagation Magazine, 2025.
From Sky Survey to Position-Velocity Interpretation
What is shown: A project concept linking survey observations, calibration context, and sky/velocity interpretation.
Why it matters: The model \(T_B(\alpha,\delta,v_{\mathrm{LSR}})\) is the scientific endpoint used to connect sky position, H I intensity, and radial velocity. This figure should not be read as a complete calibrated 3D brightness-temperature cube by itself.
Source: Project lecture material.
H I 21-cm Line Example
What is shown: A real H I line example included in the lecture material.
Why it matters: The line profile is the observational signature that lets students connect antenna temperature, calibration, velocity, and Galactic hydrogen science.
Source: Project lecture material.
Data Processing Levels
From receiver output to science product
The dataset area is prepared for future public releases without inventing downloadable files.
Raw receiver output
Spectrum
Calibrated measurement
H I line product
Position / velocity dataset
Scientific visualization
Dataset Registry
Available and planned data products
Observation datasets will be added as they are prepared for public release.
Dataset title
Description
Observation type
Coordinates
Frequency coverage
Format
Status
Raw receiver output
Receiver captures before public packaging.
Receiver acquisition
In preparation
H I observing band
Coming soon
In Preparation
H I spectra
Spectral products after FFT, averaging, and processing.
Hydrogen-line spectrum
In preparation
Near 1.42 GHz
Coming soon
In Preparation
Position / velocity products
Future science products connecting sky coordinates and velocity.