Auxiliary linear tracking control system for operation of distributed agricultural machine

The invention relates to an auxiliary linear tracking control system for operation of a distributed agricultural machine, which comprises a GPS receiver for receiving information on the current operation position coordinate of the agricultural machine, a control terminal for calculating the yawing distance between the agricultural machine and the current operation navigation line according to the position coordinate and transmitting the yawing distance information to a navigation indicating controller, and the navigation indicating controller comprises a two-color light-emitting diode and a plurality of single-color light-emitting diodes and controlling the different light-emitting states of the two-color light-emitting diode and the single-color light-emitting diodes according to the yawing distance. The auxiliary linear tracking control system achieves the linear tracking auxiliary control of a tractor in the operation process based on the digital design of an operation navigation target route of the tractor, the GPS navigation and an embedded control technique, is more precise than conventional tractor operation navigation techniques with a scriber, foam spraying and the like, is not limited by the farmland operating environment, and improves the operation quality and the efficiency.