Patent ID: 11962395
Assignee: CHINA STARWIN SCIENCE & TECHNOLOGY CO., LTD
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. 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.