电子学报2018，Vol.46Issue(6)：1306-1311,6.DOI:10.3969/j.issn.0372-2112.2018.06.005
数字摄像能见度仪夜间观测技术研究
A Study on Visibility Observation at Nighttime Using Digital Photography Visiometer System
摘要
Abstract
Digital photography visiometer systems have been well developed and widely used in visibility observation at daytime. However,the observation at nighttime is often limited due to errors and fluctuations associated with the poor uni-formity of illumination and instability of lighting-sources at nighttime which might be affected by power-supply sources and environmental temperature changes. In this study,we proposed a specific light-emitting-diode ( LED) system as nighttime lighting-source which is anti-shaking,stable,and has a short response time. The uniformity of illumination has been signifi-cantly improved by using these high-density arrays of LED lighting sources with four illumination reflectors installed around the LED lighting-source box and one diffuser in the front. To reduce the fluctuations and improve the stability of the power-supply system,we designed a high-stable power supply system with constant-voltage-drive mode and constant self-feedback current drive circuit. Target-oriented algorithms have been developed to minimize the errors due to changes in illumination of lighting sources caused by temperature changes.关键词
能见度/LED/夜间观测/均匀性/稳定性Key words
visibility/LED/nighttime observation/uniformity/instability分类
通用工业技术引用本文复制引用
王京丽,刘旭林,刘金城,阮顺贤,韦涛,聂凯..数字摄像能见度仪夜间观测技术研究[J].电子学报,2018,46(6):1306-1311,6.基金项目
科技部公益性行业专项(No.GYHY201106047) （No.GYHY201106047）
气象关键技术集成项目(No.GMAGJ2014M02) （No.GMAGJ2014M02）
国家自然基金(No.41575156) （No.41575156）
中央级公益性科研院所基本科研业务费专项(No.IUMKY201605,No.IUMKY201713) （No.IUMKY201605,No.IUMKY201713）
