Apparatus and method for determining a spatial position of a transmitter
AssigneeRohde & Schwarz GmbH & Co. KG
InventorBernhard Mayr
Life of this patent
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Abstract
A determination of a spatial position of a transmitter which emits a wireless signal is provided. A receiver which moves relative to the transmitter receives the wireless signal and analyses a Doppler shift in the received signal. Information is generated for specifying possible spatial positions of the transmitter based on a point of time when a sign in the Doppler shift changes. In this way, a very simple and efficient determination of possible locations of the transmitter can be achieved.
Claims20
An apparatus for determining a spatial position of a transmitter, wherein the transmitter moves relative to the apparatus and the transmitter emits a wireless signal, the apparatus comprising:
- a receiver adapted to receive the wireless signal emitted by the transmitter;
- a signal processor adapted to determine a Doppler shift in the received signal and to identify a change of sign in the determined Doppler shift;
- a position acquisition device adapted to acquire navigation data relating to a position and/or a movement of the apparatus at a point of time when the sign in the determined Doppler shift changes;
- and
- a position estimator adapted to compute information relating to the spatial position of the transmitter with respect to the position of the apparatus based on the acquired navigation data.
A method for determining a spatial position of a transmitter, wherein the transmitter moves relative to the apparatus and the transmitter emits a wireless signal, the method comprising:
- receiving, by a receiver, the wireless signal emitted by the transmitter;
- determining a Doppler shift in the received signal by a signal processor;
- identifying a change of sign in the determined Doppler shift by the signal processor;
- acquiring, by a position acquisition device, navigation data relating to a position and/or a movement of the apparatus at a point of time when the sign in the determined Doppler shift changes;
- and
- computing information relating to the spatial position of the transmitter with respect to the position of the apparatus based on the acquired navigation data by a position estimator.
Dependencies are inferred from the claim text.