Whole-airspace satellite search method and device based on phased array antenna

A whole-airspace satellite search method based on a phased array antenna, comprising the following steps:

• S1:
• initializing the phased array antenna, and controlling an array surface of the phased array antenna to a horizontal direction;
• S2:
• calculating an angle to aim a satellite at a place where the phased array antenna is located;
• S3:
• combining attitude data of the array surface of the phased array antenna;
• and calculating, based on the angle to aim the satellite at the place where the phased array antenna is located, a beam angle of the phased array antenna;
• S4:
• deploying the phased array antenna based on the beam angle;
• determining whether the phased array antenna receives a valid signal;
• if yes, proceeding to step S6;
• and if not, proceeding to step S5;
• S5:
• controlling the phased array antenna to perform an offset scanning, and returning to step S3;
• S6:
• recording a beam azimuth angle and a beam off-axis angle corresponding to a maximum signal strength, and proceeding to step S7;
• S7:
• calculating an azimuth compensation angle and a pitch compensation angle based on the beam azimuth angle and the beam off-axis angle corresponding to the maximum signal strength;
• and
• S8:
• driving, based on the azimuth compensation angle and the pitch compensation angle, the phased array antenna to aim the satellite;
• wherein step S5 comprises the following sub-steps:
• S51:
• offsetting a pitch angle by multiple beam widths;
• S52:
• controlling the phased array antenna for an electronic 360° azimuth scanning;
• S53:
• determining whether the valid signal is scanned by preset n times of the electronic 360° azimuth scanning;
• if yes, returning to step S3;
• and if not, proceeding to step S54;
• and
• S54:
• controlling a pitch motor to raise the array surface of the phased array antenna to 45°;
• controlling an azimuth motor to rotate 360° for the electronic 360° azimuth scanning to perform a whole-airspace scanning;
• and returning to step S3 if the valid signal is scanned.