Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Stefan Koehler

Guenter Rohmer

Marco Breiling

Alfonso Carrera

Ernst Eberlein

Heinz Gerhaeuser

Holger Stadali

Reiner Retkowski

Thomas Von Der Gruen

Carmen Wagner

Ingmar Bretz

Guenter Hofmann

Marcus Bliesze

Thomas Von Der Grün

Sylvia Couronné

Günter Hofmann

A signal processor for processing a receiving signal having a first usable frequency band and a second usable frequency band includes a first mixer for mixing the receiving signal with a first local oscillator signal, wherein a frequency of the first local oscillator signal is asymmetrical between the first usable frequency band and the second usable frequency band. The first mixer is implemented to obtain an in-phase signal and a quadrature signal, having a first signal portion representing a mixed image of the first usable frequency band, and having a second signal portion representing a mixed image of the second usable frequency band. The signal processor comprises a second mixer) for mixing the in-phase signal and the quadrature signal by using the second local oscillator signal. A frequency of the second local oscillator signal is selected such that the mixed image of the first usable frequency band and the mixed image of the second usable frequency band are at least partly image bands of each other with regard to the second local oscillator signal. The second mixer is implemented to separately provide information content of the first usable frequency band and the second usable frequency band at its output, for obtaining a first output signal, which substantially comprises information content of the first usable frequency band, and for obtaining a second output signal which substantially comprises information content of the second usable frequency band.

Signal processor and method for processing a receiving signal

A receiver for receiving a first usable frequency band and a second usable frequency band includes a band-pass filter device for filtering one or several receiving signals, a mixer device for converting the combination signal or the first band-pass filter signal and the second band-pass filter signal with a local oscillator signal, for obtaining a first intermediate frequency signal and a second intermediate frequency signal, and an intermediate frequency filter device for filtering the first intermediate frequency signal and the second intermediate frequency signal. Further, the receiver includes an analog/digital converter device for analog/digital converting the first filtered intermediate frequency signal and the second filtered intermediate frequency signal by using a single sampling frequency for obtaining a first digitized intermediate frequency signal and a second digitized intermediate frequency signal.

Receiver and method for receiving a first usable frequency band and a second usable frequency band

A synchronization device for determining a position of a synchronization signal in a receive signal, the synchronization signal being based on a coarse synchronization signal and a fine synchronization signal, includes a signal processing means configured to determine, based on the coarse synchronization signal, a section of the receive signal in which is located the fine synchronization signal, and to determine in the section of the receive signal, based on the fine synchronization signal, the position of the synchronization signal in the receive signal for a synchronization.

Synchronization device and device for generating a synchronization signal

A signal converter for converting a start signal into an end signal includes means for copying the start signal to obtain a plurality of copied start signals, wherein a copied start signal may be fed into a processing branch as a branch signal. Further, the signal converter includes a first branch processing means in a first processing branch for processing a first branch signal according to a first processing regulation to obtain a first processed branch signal. Further, the signal converter includes a second branch processing means in a second processing branch for processing a second branch signal according to a second processing regulation to obtain a second processed branch signal, wherein the second processing regulation is different from the first processing regulation and wherein the first processing regulation and the second processing regulation are implemented to cause a low-pass polyphase filtering of the copied start signals. Finally, the signal converter includes selection means for sequentially selecting the first processed branch signal and then the second processed branch signal in order to obtain the end signal.

Signal converter for converting a start signal to an end signal and method for converting a start signal to an end signal

In a method for the continuous real time tracking of the position of at least one mobile object in a defined multidimensional space, at least one mobile transmitter module is attached to at least one mobile object and the signals from the at least one module are received by a stationary receiving and signal processing network and then centrally processed. The signals emitted by each transmitter module are electromagnetic waves sent within a frequency band range using time division multiplexing techniques. Due to the fact that the frequency band is used as a single channel for the purpose of maximizing the accuracy with which a position is detected, and due also to the fact that the communication process between the transmitters and the receivers is based on the principle of pseudo-random time division multiplexing using burst transmissions of low cross correlation with non synchronized pseudo-random patterns, there is created a method for the continuous tracking of the position of one or more mobile objects at any time and in any place which is of very high positional resolution and has a temporal resolution of just a few milliseconds.

Method for the continuous real time tracking of the position of at least one mobile object as well as an associated device

A system for determining the position of an object, comprising a reference transmitter device () disposed in a fixed position, the reference transmitter device () having a reference time supplying means for supplying a reference time signal that indicates a reference time, at least two transmitter/receiver devices () disposed in fixed positions with respect to each other and to the reference transmitter device (), each transmitter/receiver device () having a time supplying means for supplying a time signal indicating a time, a receiver means for receiving the reference time signal from the reference transmitter device () and a synchronization means for processing the time signal and the reference time signal, as well as a position determining device () on the object for determining the position of the object.

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Roedental, Germany

Stefan Koehler