{
  "id": "jy-9-wall-eye",
  "name": "JY-9 Wall Eye",
  "aliases": [],
  "domain": "land",
  "country": "CHN",
  "category": "Mobile low-altitude search radar",
  "status": null,
  "fielded": 1989,
  "operators": [
    "CHN",
    "EGY",
    "ZWE"
  ],
  "prolif_count": 3,
  "summary": "The JY-9 Radar is a mobile S-band, low-altitude search radar designed for use in air defense, gap filling, airport surveillance, and coastal defense. It is designed for effective detection of targets at low altitude in both ECM and natural clutter environments.",
  "specs": [
    {
      "k": "",
      "label": "Manufacturer",
      "section": "system",
      "v": "The system is manufactured by the East China Research Institute of Electronic Engineering(ECRIEE)/No.38 Research Institute.",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "crew",
      "v": 4,
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Band",
      "section": "firecontrol",
      "v": "S (2-4 GHz)",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Maximum range",
      "section": "system",
      "v": "150 km",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Coverage, azimuth",
      "section": "system",
      "v": "360 deg",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Azimuth",
      "section": "system",
      "v": "1.3 deg",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Detection accuracy, azimuth",
      "section": "system",
      "v": "0.4 deg",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Tracking",
      "section": "system",
      "v": "1,000 plots; 72 tracks",
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "length_m",
      "v": 12,
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "medium"
    },
    {
      "k": "width_m",
      "v": 12,
      "src": [
        "weg-jy-9-wall-eye"
      ],
      "conf": "low",
      "note": "Automated check: outside the expected range for this type; verify against the source."
    }
  ],
  "payloads": [],
  "variants": [],
  "art": "generic",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-10-10",
      "change": "Entry created from the Worldwide Equipment Guide (ODIN), bulk import"
    }
  ],
  "url": "https://www.defensepedia.com/systems/jy-9-wall-eye.html",
  "sources": {
    "weg-jy-9-wall-eye": {
      "title": "JY-9 Wall Eye Chinese Mobile Low-Altitude Search Radar",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/JY-9_Wall_Eye_Chinese_Mobile_Low-Altitude_Search_Radar",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}