Auxiliary navigation system suitable for crawler-type potato harvester and control method

The invention discloses an auxiliary navigation system suitable for a crawler-type potato harvester and a control method. The system comprises a navigation module, a main controller, an upper computer interaction platform and a power supply module. The navigation module is used for acquiring navigation information of the crawler-type potato combine harvester; the upper computer interaction platform is used for setting parameters and navigation routes of auxiliary navigation control of the crawler-type potato combine harvester; the main controller is used for performing real-time navigation control on the crawler-type potato combine harvester based on the navigation information, the navigation route and the parameters of the auxiliary navigation control, so as to realize field operation auxiliary navigation of the crawler-type potato combine harvester; the power supply module is used for supplying power to each part. Aiming at the auxiliary navigation harvesting operation of the crawler-type potato combine har