Communication device for estimating azimuth angle, estimating method for communication device, and communication device for estimating position by calculating emission angle

An estimating method for a communication device, comprising:

• switching between a plurality of azimuth angles in order to receive a signal, wherein the signal comprises a pre-determined AOD;
• calculating a plurality of signal power corresponding to the signal received according to the plurality of azimuth angles;
• determining a maximum signal power of the plurality of signal power;
• determining the pre-determined AOD according to a first azimuth angle corresponding to the maximum signal power;
• and
• calculating to obtain a final AOD according to the pre-determined AOD and a deviation angle that is obtained according to the signal of at least one azimuth angle of the plurality of azimuth angles adjacent to the pre-determined AOD.

A communication device for estimating a position by calculating AOD, comprising:

• a receiving circuit, configured to switch between a plurality of azimuth angles in order to receive a first signal transmitted by a first transmitting circuit of a first communication device with a first AOD and a second signal transmitted by a second transmitting circuit of a second communication device with a second AOD;
• and
• an estimating circuit, configured to:
• calculate a plurality of signal power of the first signal and the second signal received by the receiving circuit located at the plurality of azimuth angles;
• determine a maximum signal power of the plurality of signal power of the first signal and a maximum signal power of the plurality of signal power of the second signal;
• determine a pre-determined AOD of the first signal according to a azimuth angle corresponding to the maximum signal power of the plurality of signal power of the first signal, and a pre-determined AOD of the second signal according to a azimuth angle corresponding to the maximum signal power of the plurality of signal power of the second signal;
• calculate to obtain a final AOD of the first signal according to the pre-determined AOD of the first signal and a deviation angle that is obtained according to the first signal of at least one azimuth angle of the plurality of azimuth angles adjacent to the pre-determined AOD, and a final AOD of the second signal according to the pre-determined AOD of the second signal and a deviation angle that is obtained according to the second signal of at least one azimuth angle of the plurality of azimuth angles adjacent to the pre-determined AOD;
• and
• calculate a position of the communication device according to a known position of the first communication device and the final AOD of the first signal, and a known position of the second communication device and the final AOD of the second signal.