1. Prepare calibration site: Select an open and electromagnetic interference free area for calibration. Ensure that there are no tall buildings, trees, or other objects within the venue that may affect signal transmission.

2. Install the drone and calibration equipment: Place the DJI drone in the center of the calibration site to ensure that it is in a horizontal position. At the same time, install calibration equipment such as radiometers, antennas, etc.

3. Set drone parameters: According to the instructions of DJI drone, enter the drone's settings menu and select the "radiation calibration" mode. In this mode, parameters such as transmission power and frequency of the drone can be set.

4. Conduct radiation testing: Follow the operating instructions of DJI drones to conduct radiation testing. It is usually necessary to test the radiation intensity of drones at different distances and angles to ensure compliance with relevant regulations and standards.

5. Record test data: During the testing process, record the radiation intensity, distance, angle, and other data of the drone. These data will be used for subsequent analysis and evaluation.

6. Analyze test results: Analyze the collected data and evaluate whether the radiation performance of the drone meets expectations. If problems are found, it is necessary to adjust the parameters of the drone or take other measures to improve it.

7. Complete calibration: If the test results meet expectations, complete the radiation calibration. If it does not meet expectations, the above steps need to be repeated for recalibration.

It should be noted that radiation calibration is a professional job that requires corresponding knowledge and skills. When conducting calibration, relevant regulations and standards should be strictly followed to ensure the accuracy and reliability of the testing.