GPS signal reception apparatus and method
AssigneeElectronics and Telecommunications Research Institute
InventorsJin-Chun Wang, Dong-Hoon Shin, Ui-Jung Kim, Dae-Heon Lee, Hae-Yong Yang, Seong-Taek Chee
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Abstract
A Global Positioning System (GPS) signal reception apparatus including a GPS antenna unit, a GPS signal selection unit, and a jamming signal detection unit is provided. The GPS antenna unit includes a first-type antenna and a plurality of second-type antennas which have directivities different from each other. The GPS signal selection unit selects any one of the first-type antenna and the plurality of second-type antennas as a selected antenna. The jamming signal detection unit detects a jamming signal present in a GPS signal by analyzing the GPS signal which is received via the selected antenna.
Claims17
A Global Positioning System (GPS) signal reception apparatus, comprising:
- a GPS antenna unit having a first-type antenna and a plurality of second-type antennas, the plurality of second-type antennas having directivities different from each other;
- a GPS signal selection unit configured to select any one of the first-type antenna and the plurality of second-type antennas as a selected antenna;
- and
- a jamming signal detection unit configured to detect a jamming signal present in a GPS signal by analyzing the GPS signal which is received via the selected antenna wherein, when a jamming signal is detected from the GPS signal, the GAS signal selection unit sequentially changes the selected antenna among the plurality of second-type antennas in response to a control signal from the jamming signal detection unit;
- and
- wherein the jamming signal detection unit measures a strength of the jamming signal present in the GPS signal received via the selected antenna among the plurality of second-type antennas, and then performs control such that a second-type antenna in which the strength of the jamming signal is weakest is finally connected for receiving.
A GPS signal reception method, comprising:
- selecting any one of a first-type antenna and a plurality of second-type antennas as a selected antenna, the plurality of second-type antennas having directivities different from each other;
- detecting a jamming signal present in a GPS signal by analyzing the GPS signal which is received from the selected antenna;
- when a jamming signal is detected in the GPS signal, measuring a strength of the jamming signal present in the GPS signal which was received from the selected antenna among the second-type antennas while sequentially changing the selected antenna among the plurality of second-type antennas;
- and
- finally selecting a second-type antenna in which the strength of the jamming signal is weakest from among the plurality of second-type antennas as the selected antenna.
Dependencies are inferred from the claim text.