radar-signal-processing

radar-signal-processing is a skill for Claude Code, Codex from benchflow-ai/skillsbench. It costs 109 tokens per session (626 once invoked), scanned A, original, Apache-2.0.

A processing guide for turning raw radar I/Q recordings into a cleaned one-dimensional phase signal. Radar I/Q data stores the in-phase and quadrature parts of a radio measurement.

In plain words
What is it for?
Use it to parse CW or FMCW millimetre-wave radar captures, perform range analysis for FMCW data, extract phase, and prepare the signal for downstream analysis.
Why use it?
It provides an ordered way to remove clutter, select a subject range, and unwrap the signal phase before motion or vital-sign analysis.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to parse CW or FMCW millimetre-wave radar captures, perform range analysis for FMCW data, extract phase, and prepare the signal for downstream analysis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/benchflow-ai/skillsbench/radar-signal-processing
About the project

SkillsBench is a benchmark for measuring how effectively AI agents use modular skills—folders containing instructions, scripts, and resources—to complete specialized tasks. It helps researchers and developers evaluate both skill quality and agent behavior, including tasks that require combining multiple skills. The catalogue’s skills and instructions are evaluated as part of this workflow.

benchflow-ai/skillsbench · 1,764 stars · on GitHub · skillsbench.ai

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add benchflow-ai/skillsbench --skill radar-signal-processing
Clone the repo
git clone --depth 1 https://github.com/benchflow-ai/skillsbench

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for radar-signal-processing

README.md
[![agentmods](https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/radar-signal-processing/github.svg)](https://agentmods.dev/skills/benchflow-ai/skillsbench/radar-signal-processing)
Your own site
<a href="https://agentmods.dev/skills/benchflow-ai/skillsbench/radar-signal-processing"><img src="https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/radar-signal-processing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for radar-signal-processing

Your own site · 80×15
<a href="https://agentmods.dev/skills/benchflow-ai/skillsbench/radar-signal-processing"><img src="https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/radar-signal-processing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 109 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 626 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00109 $0.00626
Opus 5 $0.00055 $0.00313
Sonnet 5 $0.00022 $0.00125
Haiku 4.5 $0.00011 $0.00063

Measured 9d ago against content hash 0f1194ad676b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

radar-signal-processing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

tasks/radar-vital-signs/environment/skills/radar-signal-processing/SKILL.md · 46 lines

What it actually says

Radar Signal Processing

Get from a raw binary I/Q capture to a clean 1-D phase trace that downstream vital-signs / motion analysis can consume.

Pipeline (do every step in order)

  1. Parse binary I/Q to complex samples. Use the JSON/YAML sidecar to determine format — never assume. See references/iq-formats.md.
  2. (FMCW only) Range FFT across fast time → 2-D range matrix. CW skips this step.
  3. Remove static clutter. Subtract the temporal mean:
    • CW: iq -= iq.mean()
    • FMCW: R -= R.mean(axis=0, keepdims=True) on the range matrix
  4. (FMCW only) Pick the subject range bin. See references/range-bin.md.
  5. Extract phase with unwrap:
    phase = np.unwrap(np.angle(iq_or_bin))
    phase -= phase.mean()
    
  6. If fs >= 500 Hz and downstream needs sub-Hz filtering, decimate first:
    from scipy.signal import decimate
    phase_ds = decimate(phase, q=int(fs/50), ftype='iir', zero_phase=True)
    fs_new = fs / int(fs/50)   # ~50 Hz target
    

Critical rules

rule why (short)
Use phase, not magnitude 1 mm motion at 24 GHz ≈ 1 rad; magnitude is ~40 dB worse SNR
Clutter removal goes before np.angle DC offset anchors phase off zero, eats the unwrap budget
Never design a 0.1 Hz filter against a 2 kHz signal SciPy biquad silently NaNs; decimate to ~50 Hz first
Never argmax(magnitude) across all range bins DC bin (bin 0) and static reflectors dominate — restrict to a physical subject-range window

When things go wrong

If the output is garbage, walk through references/debugging.md in order — it's fast and catches most ingestion/SNR bugs.

Not in scope

Pulse/UWB time-of-flight, MIMO angle-of-arrival, Doppler-only gesture radar.

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 46 lines · 109 tokens per session scan A 0f1194ad676b

Subscribe to this mod's changes

radar-signal-processing is a skill published in the GitHub repository benchflow-ai/skillsbench (1,764 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 109 tokens to every session and 626 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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