Weather Balloons Classical sounding rocket approach
{"Image DocumentName": "Weather Balloons Classical sounding rocket approach", "Image ImageDescription": "Release a sequence of free pilot balloons (pibals) that drift latterly with the horizontal wind field. Track these optically with two theodolites that regularly report pibal angular positions. Estimate three pibal coordinates using. a split-the-difference algorithm. Filter the position data to obtain wind vector. Main problem is pibals ascend erratically. even in still air\u2026more on that later. Winds so measured will reflect frontal weather and diurnal breezes. Gusts add noise. Most recently measured winds used to predict rocket trajectory. Major drawback is costs well beyond what we can afford. Line of closest approach. LOS 2. LOS 1. Estimated position.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}