Holding device for a work vehicle attachment

A work vehicle for operating on a worksite having grade control configured to be calibrated using a rover, the work vehicle comprising:

• a frame supported by a plurality of ground-engaging units, the ground-engaging units configured to support the frame on a surface of the worksite;
• an attachment coupler coupled to the frame, the attachment coupler movable relative to the frame by an attachment actuator;
• an attachment coupled to the attachment coupler;
• a global positioning system coupled to the work vehicle, the global positioning system configured for generating a position signal indicative of an attachment position;
• and
• a controller communicatively coupled to the attachment actuator and the global positioning system, the controller comprising a data storage device and an electronic data processor, the data storage device configured for storing instructions that are executable by the electronic data processor to cause the electronic data processor to:
• receive the position signal and generate a grade control reading,
• receive a rover reading from a rover coupled to a rover pole that is secured to the attachment with a holding device, the holding device having a rover pole receiving portion configured to receive the rover pole, a facing portion positioned on a front or rear of the attachment, and a bottom portion positioned on a bottom portion of the attachment,
• compare the grade control reading to the rover reading,
• generate a corrected reading to control the work vehicle if the grade control reading and the rover reading are irreconcilable, the corrected reading configured to reconcile the grade control reading with the rover reading, and
• control the attachment actuator at the worksite with the grade control reading configured to accurately calculate a position of the attachment relative to a desired grade of the worksite.