A Software Radio Based Ionosonde Using GNU Radio
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
ABSTRACT\nThe Canadian Advanced Digital Ionosonde (CADI) is used to study and investigate the structure and motion o f the ionosphere.\nThe main components of CADI are implemented in microcontroller based digital logic. Due to the increased speed and reconfiguration capability of modem FPGAs (Field Programmable Gate Arrays) and ADCs (Analog-Digital Converters), this project is aimed to develop an ionosonde based on an open source radio software platform, GNU Radio, in conjunction with its hardware support, the Universal Software Radio Peripheral (USRP). The lowest cost FPGA, Cyclone EP1C12Q240C8 is selected to control Analog Digital Converter to transmit a HF (High Frequency) signal and to decimate and down convert the signal at the receiver side, which is controlled by a USB controller, and to load the FPGA configuration image through GNU radio platform. To obtain a good range resolution and low noise level, the signal is modulated by a 113-bit Legendre sequence with a preamble packed at front for synchronization. Based on the experimental results, the discussion and conclusion are included.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.003 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it