通过拼接尺度条形方法即兴的长测试长度:根据ASTM E3125-17对陆地激光扫描仪的性能评估
Shendong Shi1,2, Bala Muralikrishnan2, Vincent Lee2
1State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, People's Republic of China.
概括
一种新的拼接尺度条 (SSB) 方法使用短,稳定的尺度条可靠地测试地面激光扫描仪 (TLS). 这种方法为绩效评估提供了一个更易于管理和更准确的替代方案,而不是长尺度条.
科学领域:
- 地理学工程 工程地质学
- 计量学 计量学 计量学
- 地理空间测量 空间测量
背景情况:
- 定期的性能评估对于地面激光扫描仪 (TLS) 数据的可靠性至关重要.
- 在ASTM E3125-17标准中引入了标准化测试程序,包括点对点长度测量.
- 传统的长尺条 (≥2m) 由于难以控制和长度变化而存在挑战.
研究的目的:
- 引入和验证用于TLS性能评估的拼接尺度条 (SSB) 方法.
- 为了证明短尺度条可以作为可靠的空间长度参考.
- 根据ASTM E3125-17使用新型SSB方法评估TLS性能.
主要方法:
- 提出了一种拼接尺度条 (SSB) 方法,使用短尺度条 (≤1m) 来创建更长的参考长度.
- 研究了TLS系统错误在短距离上保持稳定的理论和实验要求.
- 通过使用1.15米的SSB来创建2.3米的参考长度来评估TLS性能,并将其与单个2.3米尺度棒进行比较.
主要成果:
- 该SSB方法允许短,实验室校准的尺度条提供扩展的空间长度参考.
- 实验结果显示,SSB和直接测量方法之间的长度误差最大偏差为0.072毫米.
- 这种偏差明显小于典型的TLS准确性规范,表明高可靠性.
结论:
- 拼接尺度条 (SSB) 方法为TLS性能评估提供了稳定,准确和实用的替代方案.
- 该SSB方法符合标准化测试协议的要求,如ASTM E3125-17.
- 这种技术提高了从地面激光扫描仪获得的测量的可靠性和准确性.
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