Use of Radar The weather radar has two main functions: • Weather detection • Mapping. Weather detection is the primary function. For weather detection, the radar detects precipitation droplets. The strength of the echo is in proportion to the droplet size, composition and quantity (e.g. the reflection of water particles is five times greater than ice particles of the same size). Therefore, the weather radar does not detect weather that has small droplets (e.g. clouds or fog), or that does not have droplets (e.g. clear air turbulence). Mapping is the secondary function. For mapping, the echo takes into account the difference between incoming and outgoing signals. Any significant difference in the signal is easily mapped (e.g. mountains or cities), but a small difference in the signal is not mapped (e.g. calm sea or even ground).
Posted on: Wed, 01 Oct 2014 22:25:12 +0000
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