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While lidar uses laser to detect and determine the range and speed of an object, radar (radio detection and ranging) uses radio wave to achieve the same function. Both laser and radio wave are electromagnetic (EM) waves but they belong to different wavelength domains. Lasers operates at the infrared, visible light, and ultraviolet domains of the EM spectrum, whereas wavelengths of radar waves are longer than 0.1 mm.

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Introduction to Radar

  • 章节

  • 发表日期：

    2026年

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  • Yong Ching Lim,
  • Paulo S. R. Diniz,
  • Yih-Fang Huang

摘要

While lidar uses laser to detect and determine the range and speed of an object, radar (radio detection and ranging) uses radio wave to achieve the same function. Both laser and radio wave are electromagnetic (EM) waves but they belong to different wavelength domains. Lasers operates at the infrared, visible light, and ultraviolet domains of the EM spectrum, whereas wavelengths of radar waves are longer than 0.1 mm.