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chronolocation

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Original

English
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Translation

Chinese

Chronolocation

时空定位

Establish place (geolocation) and time (chronolocation) from the pixels when there's no metadata. This is core GEOINT tradecraft.
在无元数据的情况下，通过像素信息确定地点（地理定位）和时间（时间定位）。这是地理情报（GEOINT）的核心技术。

Geolocate — read the frame

地理定位——解析画面

Inventory every clue and search on it:
  • Text — signs, ads, license-plate formats, phone numbers, business names. Translate; a business name + region is often an instant pin.
  • Built environment — architecture, road markings, curb/utility-pole styles, bollards, traffic-light design, guardrails — these vary by country/region.
  • Natural — vegetation, terrain, mountains on the horizon (match skyline profiles), coastlines.
  • Infrastructure — power lines, antennas, bridges, rail.
Match candidates against satellite/aerial (Google Earth, Bing, Yandex, Sentinel Hub) and street-level (Google Street View, Yandex Panoramas, Mapillary, KartaView). Yandex often wins outside North America.
梳理所有线索并进行搜索：
  • 文字信息——标识、广告、车牌格式、电话号码、商家名称。 翻译文字；商家名称+地区通常能直接锁定位置。
  • 人工环境——建筑风格、道路标线、路缘/电线杆样式、隔离桩、交通信号灯设计、护栏——这些特征因国家/地区而异。
  • 自然环境——植被、地形、地平线处的山脉（匹配天际线轮廓）、海岸线。
  • 基础设施——电力线、天线、桥梁、铁路。
将候选地点与卫星/航空图像（Google Earth、Bing、Yandex、Sentinel Hub）和街景图像（Google Street View、Yandex Panoramas、Mapillary、KartaView）进行匹配。在北美以外地区，Yandex通常更具优势。

Chronolocate — pin the time

时间定位——锁定时刻

  • Shadows — direction gives compass bearing of the sun; length + known location gives time of day and rough date (use SunCalc or Suncalc.org).
  • Season — foliage, snow, crops, daylight length.
  • Events — construction stages, banners, weather; cross-check against dated satellite imagery and weather archives (e.g., historical METAR).
  • 阴影——阴影方向可确定太阳的方位角；阴影长度+已知地点可推算出一天中的时刻和大致日期（可使用SunCalc或Suncalc.org工具）。
  • 季节特征——植被状态、积雪、农作物、日照时长。
  • 事件线索——施工阶段、横幅、天气；结合带日期的卫星图像和气象档案（如历史METAR数据）进行交叉验证。

Method

方法步骤

  1. List clues, ranked by how location-specific each is.
  2. Narrow to a region from the strongest clues.
  3. Find the exact site in satellite/street imagery.
  4. Confirm by matching a second independent feature (building shape + sign + terrain all aligning). One match is a guess; three is a location.
Feed confirmed coordinates and confidence to 
geoint-photo
/ 
osint-report
.
  1. 列出所有线索，并按地点特异性排序。
  2. 通过最明确的线索缩小到目标区域。
  3. 在卫星/街景图像中找到精确地点。
  4. 确认：匹配第二个独立特征（如建筑形状+标识+地形全部吻合）。一次匹配只是猜测；三次匹配即可确定地点。
将确认后的坐标和置信度输入
geoint-photo
/ 
osint-report
。