N 30 标准查询与下载

DB61/T 1715-2023 资源规划测量技术规范

本文件规定了陕西省资源和规划领域控制测量、用地测量及不动产权籍调查、建设工程定线验线测量、管线定线验线测量、规划监督测量、规划竣工测量、规划三维报建、房产测绘和质量检查与验收的内容与方法。本文件适用于各市域范围内与资源规划有关的测绘工作。

Resource Planning Measurement Technical Specifications

DB61/T 1500-2021 个人眼护具视野范围检测规范

本文件规定了个人眼护具视野范围检测的准备、程序和参数计算。本文件适用于个人眼护具视野范围的检测。

Test specification for field of view of personal eye protectors

DB13/T 2613-2017 激光测控地表精平机通用技术规范

General technical specification for laser measurement and control surface finishing machine

DB61/T 1033-2016 室外光污染限值及检测方法

本标准适用于自然环境区、城乡居住区、城市道路、交通设施、体育场馆、建筑工地、广告标识和室外工作区等室外照明所产生光污染的检测和评价。

Limits and detection methods of outdoor light pollution

ISO 15529:1999 光学和光学仪器 光的传递函数 成像系统调制传递函数的测量原理

This International Standard specifies the principal modulation transfer function (MTF) associated with a sampled imaging system, together with related terms. It also outlines a number of suitable techniques for measuring these MTFs. This International Standard is particularly relevant to electronic imaging devices, such as CCD cameras and the CCD arrays themselves. Although a number of measurement techniques are described, the intention is not to exclude other techniques, provided they measure the correct parameter and satisfy the general definitions and guidelines for MTF measurement as set out in ISO 9334 and ISO 9335. The use of a measurement of the edge spread function (ESF), rather than the line spread function (LSF), is noted in particular as an alternative starting point for determining the OTF/MTF of an imaging system.

Optics and optical instruments - Optical transfer function - Principles of measurement of modulation transfer function (MTF) of sampled imaging systems