18.1 DAS Measurement Concepts Topic Version1Published12/09/2016Topic Change HistoryFor StandardPRODML v2.0 18.1.1 Terminology 18.1.2 Principles: Pulse and Backscatter of Light 18.1.3 Measurements: Pulse Rate and Sample Locations 18.1.4 DAS Equipment and Data Types: Raw and Processed Data