{
  "id": "bs-903a",
  "name": "BS-903A",
  "aliases": [],
  "domain": "land",
  "country": "CHN",
  "category": "Ground surveillance radar system",
  "status": null,
  "fielded": 2000,
  "operators": [
    "CHN"
  ],
  "prolif_count": 1,
  "summary": "The Chinese BS-903A is a small, lightweight modular designed ground surveillance radar (GSR) that is able to detect, identify, and locate moving ground targets using a microstrip antenna at any time of the day regardless of the season, and also in conditions of low visibility (fog, rain, snow, dust, or smoke).",
  "specs": [
    {
      "k": "",
      "label": "Operating frequency range",
      "section": "firecontrol",
      "v": "10–20 GHz (J-band)",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Detection range, tank",
      "section": "system",
      "v": "20 km",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Detection range, truck",
      "section": "system",
      "v": "15 km",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Detection range, person",
      "section": "system",
      "v": "8 km",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Azimuth",
      "section": "system",
      "v": "360 deg",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Accuracy (range/azimuth)",
      "section": "system",
      "v": "10 m/0.4° m/deg",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Resolution (range/azimuth)",
      "section": "system",
      "v": "50 m/3° m/deg",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Continuous operating time",
      "section": "system",
      "v": "24 hours",
      "src": [
        "weg-bs-903a"
      ],
      "conf": "medium"
    },
    {
      "k": "combat_weight_t",
      "v": 0.02,
      "src": [
        "weg-bs-903a"
      ],
      "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/bs-903a.html",
  "sources": {
    "weg-bs-903a": {
      "title": "BS-903A Chinese Ground Surveillance Radar System",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/BS-903A_Chinese_Ground_Surveillance_Radar_System",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}