{
    "title": "Random Noise Radar",
    "inventor_name": "Eric Walton",
    "publication_year": 2006,
    "device_name": "Random Noise Radar",
    "goal": "Create a radar system that is virtually undetectable by resembling random noise while still detecting objects.",
    "problem_addressed": "Conventional radar signals can be detected and jammed; they also interfere with existing communication bands.",
    "concept_summary": "The system transmits a very low-intensity, ultra-wideband RF signal whose waveform is pseudorandom or random. Because the signal looks like background noise, standard receivers filter it out, making the radar hard to detect. Reflections from targets are captured and processed to extract object information.",
    "detailed_description": null,
    "category": "Electromagnetism & Magnetism",
    "principles": [
        "Pseudorandom/Random waveform transmission",
        "Ultra-wideband low-power signal",
        "Signal-to-clutter optimization"
    ],
    "scientific_domains": [
        "Electrical Engineering",
        "Physics"
    ],
    "mechanisms_of_action": [
        "Transmit low-power broadband RF noise",
        "Receive reflected noise from targets",
        "Correlate received signal with known pseudorandom pattern to detect objects"
    ],
    "materials": [],
    "energy_sources": [
        "Electrical power (RF transmitter)"
    ],
    "inputs": [
        "Electrical power",
        "Ambient RF environment"
    ],
    "outputs": [
        "Detection data (range, bearing,",
        "   "
    ],
    "claimed_performance": "Undetectable to conventional receivers, can penetrate solid walls, component cost less than $100.",
    "experimental_evidence": null,
    "replication_status": null,
    "keywords": [
        "noise radar",
        "pseudorandom waveform",
        "wideband radar",
        "stealth radar",
        "RF noise"
    ],
    "related_technologies": [
        "Traditional pulse-Doppler radar",
        "Stealth technology"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.7,
    "fringe_score": 0.2,
    "evidence_strength": 0.3,
    "risk_score": 0.2,
    "trl_estimate": 5,
    "source_urls": [
        "http://www.livescience.com",
        "http://patents.google.com/patent/US2006022866",
        "http://patents.google.com/patent/US2006012513"
    ],
    "organizations": [
        "Ohio State University"
    ],
    "applications": [
        "Military surveillance (through-wall detection)",
        "Law-enforcement speed monitoring"
    ],
    "limitations": [
        "Potential limited detection range due to low power",
        "Requires sophisticated processing to extract target returns"
    ],
    "open_questions": [
        "How effective is the system against advanced adaptive receivers?",
        "What is the maximum practical range in cluttered environments?"
    ],
    "red_flags": [],
    "evidence_quotes": [
        "A new radar system is virtually undetectable because its signal resembles random noise, according to researchers at Ohio State University.",
        "The radar uses a very low-intensity signal across a wide range of frequencies, so a TV or radio tuned to any one frequency would interpret the radar signal as a very weak form of static.",
        "The new radar can be tuned to penetrate solid walls, just as a TV signal does.",
        "Walton, whose team is filing for a patent on the device, said the components cost less than $100."
    ]
}