In direction finding, which technique is used to determine the bearing to a source?

In direction finding, which technique is used to determine the bearing to a source?

• A. Doppler shift
• B. Angle of Arrival
• C. Time Difference of Arrival
• D. Frequency difference

Answer: (B)

Determining the bearing to a signal source is done by finding the direction from which the signal arrives. Angle of Arrival uses an antenna setup, often an array, to measure how the signal reaches different elements. By looking at phase differences or time delays between those elements and solving for the incident angle, you get the bearing to the source. Doppler shift is about frequency change caused by relative motion, not where the signal came from. Time Difference of Arrival uses differences in arrival times at multiple receivers to locate a source, which is more about position than the single directional angle. Frequency difference isn’t a standard method for estimating direction. With Angle of Arrival, you obtain a direct angular estimate to guide your bearing determination.

Determining the bearing to a signal source is done by finding the direction from which the signal arrives. Angle of Arrival uses an antenna setup, often an array, to measure how the signal reaches different elements. By looking at phase differences or time delays between those elements and solving for the incident angle, you get the bearing to the source. Doppler shift is about frequency change caused by relative motion, not where the signal came from. Time Difference of Arrival uses differences in arrival times at multiple receivers to locate a source, which is more about position than the single directional angle. Frequency difference isn’t a standard method for estimating direction. With Angle of Arrival, you obtain a direct angular estimate to guide your bearing determination.