Experimental Study on Application Quality of Agricultural Machinery Operation Data Monitoring Terminal Based on Beidou Navigation Technology

To promote performance improvement of agricultural machinery operation monitoring terminal based on Beidou navigation technology, eight major operation monitoring terminal products in China was taken as object and applied in field for such tests as static CEP50/95, breakpoint continuingly, static working depth/state detection, and dynamic operation．Test results showed that BYT-4GS1 terminal has the highest static CEP test accuracy, with CEP50 of 0.111 and CEP95 of 0.13．Static depth test of ZNSS-3 and XXDZ-002-2015 rotary tiller has the smallest difference between terminal and actual value, which was 0.3 cm．Static test of harvester XXDZ-002-2015 and YBYT-4GS1 had the smallest difference between terminal and the actual value, which was 0.1 cm．Dynamic test of rotary tiller showed that A40 terminal trajectory has the lowest deviation, which was 0.803 m．YBYT-4GS1 type harvester operation test has the lowest trajectory deviation of 0.566 m．FJD4BD-97M4 terminal of rotary tiller has the lowest difference in operating area, which was 1.5%．YBYT-4GS1 terminal has the lowest difference in operating area of harvester, which was 1.05%．In application promotion, experimental results provide a basis for selecting terminal devices in different usage scenarios, and provide data support for intelligent and information-based development of traditional agricultural machinery．