Phenobot is a four-wheeled field robot driven through the field to capture crop details or characteristics, typically known as phenotype. Currently, the robot is driven manually using a remote controller to move it between the crop row (width of 30 inches). However, it will be replaced by autonomous navigation, wherein the robot will translate through the field automatically. This will be achieved by combining multiple sensor data to precisely calculate the robot pose. Particularly following sensors will be used - RTK GPS (Real Time Kinematic Global Positioning System with 0.5 cm resolution), two IMU (Inertial Measurement Units - one placed on the robot's body and the other on the robot mast), wheel odometry and camera.