Cary Institute Aerial Infrared Deer Survey - January 2020

An aerial infrared imaging flight was performed at the Cary Institute of Ecological Studies property by Davis Aviation to estimate the minimum number of deer present on the property. This data is useful for management of the Cary deer herd. Flights were conducted on the nights of 30 and 31 January 2020. <br>Imaging was accomplished with a single-engine Cessna 182 airplane and using a high-resolution Mitsubishi M-600 thermal imager oriented ‘looking’ straight down through a camera hole in the belly of the airplane. The thermal imager NTSC video output was routed through a video encoder-decoder (VED) that labeled the imagery with a continuous stream of GPS-derived position, time, date, speed and altitude information. <br>After the flight, imagery was analyzed using a TV monitor and a computer monitor. As the imagery played, the VED decoded the bar-coded GPS signal that was received from the GPS during the flight. The VED recreated the original GPS signal and sent it to the computer so the mobile mapping software ‘thinks’ it is receiving a live signal. The mapping software shows the moving position of the airplane superimposed over aerial imagery of the count area on the computer screen while the recorded infrared imagery of the area below the airplane is visible on the TV monitor. The GPS updates the airplane position once per second throughout the flight and at the same rate during the post-flight analysis. <br>The entire recorded imagery has been reviewed and individual deer identified and marked on the map. <br>Contact the author for data files. [e-mail] <br><b>Description of files:</b><br>Cary deer count report 30-31 Jan 2020.pdfReport describing methods and results of January 30,31 2020 aerial infrared flight of Cary propertyPDFCary_IR_Deer_1-31-2020_Map.pdfPDF of ArcGIS map of Cary property features overlaid with deer and turkey locations PDFCary_IR_Deer_1-31-2020_Airphoto_Map.pdfPDF of ArcGIS map of Cary property features including airphotos overlaid with deer and turkey locations PDFCary deer points 30_31 Jan20.kmlFile containing deer and turkey locations from aerial infrared flight in Google Earth-readable format that was used to create ArcGIS shapefilesKeyhole Marking Language (KML)

本数据集由Davis航空团队在卡里生态研究学院（Cary Institute of Ecological Studies）园区内开展航空红外成像飞行作业，旨在估算园区内鹿群的最小种群数量，相关数据可用于卡里鹿群的管理工作。本次飞行作业于2020年1月30日及31日夜间完成。

本次成像作业搭载单引擎塞斯纳182（Cessna 182）飞机，采用三菱M-600高分辨率热成像仪，通过机腹开设的摄影孔垂直向下拍摄。热成像仪的NTSC制式视频输出信号经由视频编解码器（video encoder-decoder, VED）处理，该设备可为影像叠加连续的GPS衍生位置、时间、日期、速度及高度信息。

飞行结束后，研究人员通过电视显示器与计算机显示器对影像开展分析。影像播放过程中，视频编解码器会解码飞行阶段接收的条形码格式GPS信号，重建原始GPS信号并传输至计算机，使移动制图软件可模拟接收实时信号的状态。制图软件会将飞机的实时移动位置叠加至计数区域的航空影像中，并显示在计算机屏幕上；同时飞机下方区域的录制红外影像会在电视显示器上同步播放。整个飞行过程中GPS每秒更新一次飞机位置，后飞行分析阶段也保持相同的更新频率。

所有录制影像均已完成审阅，已在地图上对识别出的单只鹿进行标记。

如需获取数据文件，请联系作者，邮箱：[e-mail]

**文件说明：**
1. Cary deer count report 30-31 Jan 2020.pdf：阐述2020年1月30、31日卡里园区航空红外飞行作业方法与结果的报告，格式为PDF。
2. Cary_IR_Deer_1-31-2020_Map.pdf：叠加了鹿群与火鸡位置的卡里园区ArcGIS地图PDF文件。
3. Cary_IR_Deer_1-31-2020_Airphoto_Map.pdf：叠加了航空影像、鹿群与火鸡位置的卡里园区ArcGIS地图PDF文件。
4. Cary deer points 30_31 Jan20.kml：包含本次航空红外飞行作业获取的鹿群与火鸡位置数据的文件，采用可在Google Earth中读取的格式，用于生成ArcGIS形状文件，即Keyhole标记语言（Keyhole Markup Language, KML）。