System and method for determining angle of arrival for communications
AssigneesDENSO International America, Inc., Denso Corporation
InventorsR. Michael Stitt, Warren Guthrie
Life of this patent
Estimating the term…
Abstract
A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a frequency modulated signal. The system may determine a phase difference between the received signals irrespective of the modulations in the signal, thereby facilitating determining an AOA.
Claims20
A system for determining an angle of arrival for frequency modulated communications, said system comprising:
- a first antenna capable of wirelessly receiving the frequency modulated communications to generate a first frequency modulated output;
- a second antenna separated by a distance from the first antenna, the second antenna capable of wirelessly receiving the frequency modulated communications to generate a second frequency modulated output, wherein the first frequency modulated output and the second frequency modulated output are indicative of the frequency modulated communications arriving at the first and second antennas at different times;
- and
- a controller configured to determine a phase difference between the first and second frequency modulated outputs received by the first and second antennas, wherein the phase difference is determined based on unmodulated forms determined from the first and second frequency modulated outputs, whereby the phase difference is determined irrespective of frequency modulations in the first and second frequency modulated outputs.
A method of determining an angle of arrival for frequency modulated communications, said method comprising:
- generating a first frequency modulated output based on wireless receipt of the frequency modulated communications in a first antenna;
- generating a second frequency modulated output based on wireless receipt of the frequency modulated communications in a second antenna, wherein the second antenna is separated by a distance from the first antenna;
- producing first and second unmodulated forms of the first and second frequency modulated outputs;
- and
- determining a phase difference based on the first and second unmodulated forms such that the phase difference is determined irrespective of frequency modulations in the first and second frequency modulated outputs.
A system for determining an angle of arrival for a wireless communication signal, said system comprising:
- a first antenna capable of wirelessly receiving a first arbitrary length of the wireless communication signal to facilitate generation of a first frequency modulated segment;
- a second antenna separated by a distance from the first antenna, the second antenna capable of wirelessly receiving a second arbitrary length of the wireless communication signal to facilitate generation of a second frequency modulated segment, wherein the first frequency modulated segment and the second frequency modulated segment arrive at the first and second antennas at different times, wherein the first and second frequency modulated segments include frequency modulations representative of data;
- and
- a controller configured to determine a phase difference between the first and second frequency modulated segments received by the first and second antennas, wherein the phase difference is determined based on unmodulated forms of the first and second frequency modulated segments and irrespective of the frequency modulations representative of data.
Dependencies are inferred from the claim text.