The application of GPS in forestry surveys, aerial sowing and afforestation, and flying pesticides is very common. It is also used in many industries such as geological surveys, oil exploration, water conservancy surveys, and resource and environmental monitoring. With the development of society and the popularization of high technology, GPS satellite positioning systems have increasingly shown their irreplaceable role. The widespread application of GPS in modern forestry represents the trend and direction of the development of world forestry towards digital forestry. The GPS area measuring instrument plays an important role in measuring the area. The application of the GPS area measuring instrument in a variety of forestry operations will greatly increase the working efficiency. For example, the conventional cutting area survey design uses a compass meter and a measuring rope. Directional surveying measures the boundaries of the cutting area and associated areas. This method is influenced by natural environmental factors (such as mountain slope, stand status, vegetation coverage, road factors, climatic factors, human factors, etc.), and the cutting class is usually The trees are dense and bushy, and it is difficult to perform routine surveying work, and the workload is also large. However, the work efficiency is low, the cost is high, the precision is low, and the error is large. Once the GPS fixed point method is adopted for cutting area survey design, etc. Measurement work can overcome the difficulty of visibility caused by vegetation barriers and slopes. It is easier to record the boundary coordinates (azimuth) of the logging area in real time with the survey designer's movements. The connection with the computer can be easily drawn and requested. Calculating the area of ​​the cutting area, compared with conventional instruments, the application of GPS technology can not only provide precise coordinates (azimuth angles) of points, lines, and plane elements quickly, efficiently and accurately. A powerful tool for forest survey and boundary survey and dynamic management of the cutting area. Scan the WeChat QR code and automatically obtain the latest agricultural instrument information every day: 7 Mm Thickness Wall Panels,Eco Friendly Panel,Panel Ceiling Plate,Eco Friendly Wpc Panel Puyang Shangyi Decoration Material Co., Ltd. , https://www.pysydecoration.com
There are significant differences in the measurement accuracy and error rate of GPS area measurement instrument. The accuracy of GPS is between 99.1% and 99.6%, the error rate is between 0.4% and 0.9%, and the precision of compass instrument is between 95.3% and 96.6%. The error rate is between 3.4% and 4.7%. Compared with the compass instrument, GPS accuracy is significantly higher than that of the compass instrument. The error rate is significantly less than that of the compass instrument. The larger the forest area, the higher the precision and the smaller the error rate. 