Rohde & Schwarz Patente

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The present invention relates to a system of a channel monitoring in a HF frequency range, the system comprising: at least one channel monitoring device comprising an input terminal for receiving a RF signal wherein the channel monitoring device is configured to receive the RF signal, to monitor simultaneously a plurality of channels of the received RF signal that are existing in a target frequency range, to detect an incoming signal on at least one target channel in the target frequency range and to generate a control signal indicating the at least one target channel when the incoming signal is detected; and at least one radio device which is coupled to the channel monitoring device, wherein the radio device is configured to receive via its input terminal the control signal generated by the channel monitoring device and to listen to the at least one indicated target channel to receive subsequent RF signals of the incoming signal, when the control signal is received, wherein a transmission interface for connecting the at least one channel monitoring device with the at least one radio device which is configured to transmit the control signal to the radio device using a software radio protocol.

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The invention relates to an antenna tuning device (10) for tuning a frequency. The antenna tuning device (10) comprises at least one actuator (26, 28) and a movable rod (12). At least one stop washer (34, 36) and a piston (46) are connected to the rod (12). The rod (12) is moveable between a first end position and a second end position. The piston (46) is located in a cavity (42) filled with a fluid (44) such that a movement of the piston (46) compresses the fluid (44) inside the cavity (42), thereby dampening the movement of the rod (12) prior to reaching the respective end position.

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The present invention provides a measuring device (1, 11) for measuring signals (2, 12), the measuring device (1, 11) comprising a data memory (4, 14) configured to store device data (5, 15) for the measuring device (1, 11), and a data interface (6, 16) connected to the data memory (4, 14) and configured to read the device data (5, 15) from the data memory (4, 14) and output at least a part of the read device data (5, 15) to an external memory device (7, 17) in a storage mode and to read device data (5, 15) from the external memory device (7, 17) and store the read device data (5, 15) in the data memory (4, 14) in a recovery mode. The present invention further provides a corresponding method for such a measuring device (1, 11).

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The invention provides a mounting gauge (10) for assembling at least two radiators (24) of an antenna (26), particularly a log-periodic dipole antenna. The mounting gauge (10) comprises a base body (12) and at least two alignment pins (14) distanced from each other by a defined distance (D). The alignment pins (14) are shaped and distanced from each other such that they fit into corresponding openings (30, 32) of the radiators (24), thereby aligning the radiators (24) with respect to each other so as to minimize a misalignment of the radiators (24). Moreover, the invention provides a method of assembling an antenna (26). In addition, a system (40) for assembling an antenna (26) is described.

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A system (10) for communication quality checking with respect to a device under test (11) using terrestrial and non-terrestrial communication networks is provided. Said system (10) comprises a processing unit (12), a terrestrial interface (13) being in communication with the processing unit (12), and a non-terrestrial interface (14) being in communication with the processing unit (12). The processing unit (12) is configured to acquire terrestrial data with respect to at least one communication between the device under test (11) and at least one terrestrial communication network with the aid of the terrestrial interface (13). Additionally, the processing unit (12) is configured to acquire non-terrestrial data with respect to at least one communication between the device under test (11) and at least one non-terrestrial communication network with the aid of the non-terrestrial interface (14). In further addition to this, the processing unit (12) is configured to check communication quality with respect to the device under test (11) based on the terrestrial data and the non-terrestrial data.

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Disclosed is a communication system (1, 2) for air traffic control, ATC. The system (1, 2) comprises a voice communication system, VCS (1), including a controller working position, CWP (11); and a ground radio station, GRS (2), being configured to transceive audio communication. The VCS (1) and the GRS (2) are connectable via a real-time transport protocol, RTP, connection. The VCS (1) is configured to send (32) at least one first RTP packet (5) to the GRS (2) in response to a push of a push-to-talk, PTT, button at the CWP (11). A payload of the respective first RTP packet (5) consists of an RTP Header Extension. The RTP Header Extension of the respective first RTP packet (5) comprises a PTT-ON information being used to indicate a radio frequency, RF, transmission at the GRS (2). This avoids clipping or loss of syllable in VoIP networks with countrywide installations.

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A device (10) for calculating video quality information of a video sequence is provided. The device (10) comprises a data acquisition unit (11) for acquiring at least one video frame with respect to the video sequence, and a calculation unit (12) connected to the data acquisition unit (11). In this context, the calculation unit (12) is configured to calculate at least one video quality indicator value on the basis of a non-linear transformation with the aid of at least one absolute gradient value with respect to the at least one video frame and at least one lateral average value with respect to the at least one video frame.

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A test device (10) for estimating a delay caused by a device under test (19), DUT, converting a voice-based signal into a radio signal, comprising a generating unit (11) configured to generate a voice-based test signal comprising a predefined audio pattern, a transmitting unit (12) configured to transmit the voice-based test signal to the DUT (19), a receiving unit (13) configured to receive and/or demodulate as a receive signal, a test radio signal from the DUT (19) having converted the voice-based test signal into said test radio signal, and a processing unit (14) configured to associate a first time stamp with the corresponding time of transmission of the predefined audio pattern transmitted by the transmitting unit, to detect the predefined audio pattern with respect to the receive signal, to set a second time stamp if the predefined audio pattern is detected, and to estimate the delay based on the first time stamp and the second time stamp.

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A quantum key distribution (QKD) method for distributing quantum keys across at least one communication channel (18, 20) of a communication network (12) is described. The at least one communication channel (18, 20) connects at least two nodes (14, 16) of the communication network (12), wherein the at least two nodes comprise a first node (14) and a second node (16). The QKD method comprises the following steps:- determining, by means of the at least two nodes (14, 16), a common secret key, wherein the common secret key is a data key; and- determining, by means of each of the at least two nodes (14, 16), a series of quantum base states based on the common secret key, wherein the series of quantum base states corresponds to a common secret quantum key.Further, a communication method and a communication system (10) are described.

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