01/21/2025, 07:59 AM UTC
基于高速数据转换器的脉冲时间飞行参考设计LIDAR-Pulsed Time-of-Flight Reference Design
➀ 本文介绍了一种使用德州仪器（TI）高速数据转换器的LIDAR脉冲时间飞行参考设计。该设计突出了高速数据转换器解决方案的优点，如改进的目标识别、降低的采样率需求和更简单的信号链。
➁ 该设计通过增加光学器件和激光功率支持测量范围高达9米或更多。它实现了小于±6毫米的平均误差和小于3厘米的标准偏差，确保了高精度。
➂ 系统采用脉冲ToF测量方法，并利用DFT进行范围估计以提高效率。关键组件包括14位125-MSPS ADCs，16位500-MSPS DACs，高速放大器和精确时钟。
➀ This article introduces a LIDAR-pulsed time-of-flight reference design using high-speed data converters from Texas Instruments (TI). It highlights the benefits of a high-speed data converter-based solution, such as improved target identification, reduced sample rate demands, and a simpler signal chain.
➁ The design supports a measurement range of up to 9 meters or more with additional optics and increased laser power. It achieves a range measurement mean error of less than ±6 mm and a standard deviation of less than 3 cm, ensuring high accuracy.
➂ The system uses a pulsed ToF measurement method with DFT-based range estimation for improved efficiency. Key components include 14-bit, 125-MSPS ADCs, 16-bit, 500-MSPS DACs, high-speed amplifiers, and precise clocking.
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