摘要:
A device and method for secondary radar signal reception with quasi-dynamic or dynamic sectoring of a space to be monitored. The device includes at least one antenna assembly including antenna elements for the reception of transmitted secondary radar signals, a signal processing unit connected via a connection point to the antenna elements for the joint processing of received antenna signals, outputs associated with a couple matrix in the signal processing unit and individual receivers. The couple matrix includes adjustable coefficients for sectoring of the space to be monitored and for performing a superposition of the antenna signals using a multiplicative-additive combination of the received antenna signals. In the case of dynamic sectoring of the space, each receiver receives for each receipt telegram another weighted superposition of the antenna signals with certain couple coefficients, and in the case of quasi-dynamic sectoring the adjustable coefficients are fixed over a longer time period.
摘要:
A device and method for secondary radar signal reception with quasi-dynamic or dynamic sectoring of a space to be monitored. The device includes at least one antenna assembly including antenna elements for the reception of transmitted secondary radar signals, a signal processing unit connected via a connection point to the antenna elements for the joint processing of received antenna signals, outputs associated with a couple matrix in the signal processing unit and individual receivers. The couple matrix includes adjustable coefficients for sectoring of the space to be monitored and for performing a superposition of the antenna signals using a multiplicative-additive combination of the received antenna signals. In the case of dynamic sectoring of the space, each receiver receives for each receipt telegram another weighted superposition of the antenna signals with certain couple coefficients, and in the case of quasi-dynamic sectoring the adjustable coefficients are fixed over a longer time period.
摘要:
A measurement device, which communicates data to at least one system, and which has the capability of identifying measurement data returned by the system via the data communication as its own, and the capability to rule out manipulation of measurement values without use of a public or non-personal key. The measurement device includes at least an encryption and/or signature encoder that supplies information including a validity and reliability identifier for inspecting the integrity of the data, and compiles said information into a current data set and transfers it to at least said communication interface for transfer, and at least an encryption and/or signature decoder that inspects data sets returned via the communication interface using one or more keys in memory for integrity of data content and identification of the measurement device and, upon successful inspection of this data, supplies said data for further processing, evaluating or displaying.
摘要:
There are various systems designed for outputting counter data that are primarily collected under the term AMM systems today (AMM: Automatic Meter Management). Lacking in practice, however, is a consumption counter and a method for recognition of manipulations that is universally applicable, independently of other technical conditions, and that gives the customer the option for self-monitoring (consumption/leaks, etc.) locally.According to the invention, the measurement device (EZ), which communicates data to at least one system, has the capability of identifying measurement data returned by the system via the data communication as its own, and to rule out manipulation of measurement values and to thus provide this returned measurement data reliably for further processing/evaluation or display (A), comprises, among other things:at least one encryption and/or signature encoder (VSK) that supplies, using the key in the key memory (SS), the information offered to the aforementioned memories (IS, MS and ZS), including the validity and reliability identifier having information for inspecting the integrity of the data, compiles said information into a current data set and transfers it to at least the communication interface (KSS) for transfer, wherein only one part of the last data sets or their content is saved in the measurement device (EZ), and at least one encryption and/or signature decoder (VSD) that can inspect the data sets returned via the communication interface (KSS) using the key in the key memory (SS) for integrity of the data content and the identification of the measurement device (EZ) and upon successful inspection of this data. The invention falls within the field of measurement devices as well as systems for combined registration of consumption data.
摘要:
A method and a system for spatial scalable region of interest transcoding of JPEG2000 coded video frames for video surveillance systems. Based on a user defined ROI, the method transcodes HD frames into images in moderate resolution with a ROI in HD resolution. The transcoder extracts all packets belonging to the ROI or the lower resolution levels of the background from the JPEG2000 bitstream. Non-ROI packets of higher resolution levels are replaced by empty packets. The ROI is tracked using a mean shift algorithm to guarantee that always the correct image details are extracted in high resolution. Since the transcoding is performed by extracting and replacing packets of the codestream, an expensive re-encoding of the code-stream is not required. Thus, the transcoding technique is of low complexity and shows a short processing time. Combining the transcoding technique with mean shift tracking leads to a powerful video transcoding technique.
摘要:
A method and a system for spatial scalable region of interest transcoding of JPEG2000 coded video frames for video surveillance systems are shown. Based on a user defined ROI the method transcodes HD frames into images in moderate resolution with a ROI in HD resolution.The transcoder extracts all packets belonging to the ROI or the lower resolution levels of the background from the JPEG2000 bitstream. Non-ROI packets of higher resolution levels are replaced by empty packets. The ROI is tracked using a mean shift algorithm to guarantee that always the correct image details are extracted in high resolution.Since the transcoding is performed by extracting and replacing packets of the codestream, an expensive re-encoding of the code-stream is not required. Thus, the transcoding technique is of low complexity and shows a short processing time.Combining the transcoding technique with mean shift tracking leads to a powerful video transcoding technique.
摘要:
Devices and methods for the cancellation for and identification of crosstalk for different application cases, particularly for near-end crosstalk (NEXT), are known. Too little attention is paid to the situation of non-reciprocally coupled systems. Therefore, devices and methods for cancellation and identification of far-end crosstalk (FEXT), which enable a reliable identification of an unknown system, are lacking in practice.In order to allow cancellation of FEXT, where wire pairs of a bundle of transmission lines are non-reciprocally coupled, the device according to the present invention for cancellation for and identification of interfering signals in a communication system possess at least a cancellation circuit, which is connected downstream to dead time elements, an interference characteristic detection device and a cancellation control unit, which controls the setting of filter coefficients of an adaptive filter and the cancellation signal source, wherein the adaptive filter is designed as a digital cancellation filter having filter coefficients separated in time by a first delay element having the delay time T, and having an adjustable additional delay time t, whereby the setting of the additional delay time τ takes place together with the setting of filter coefficients.
摘要:
A reconfigurable bandpass filter including at least a tunable planar combline filter including varactor diodes arranged on a carrier board. For automatic calibration of adjustment of blocking voltage during operation, the reconfigurable bandpass filter includes a filter control offering an external abstracted interface. A memory is connected with the filter control. The memory stores calibration data. For approximating of the best possible filter characteristic, the filter control determines, based on memorized data, the best configuration of tuning voltages.The reconfigurable bandpass filter can be used in the field of secondary radar systems.
摘要:
Disclosed is a modular, expandable measuring device that includes an access-protected area. In one embodiment, the measuring device is a modular energy meter (EZ), which includes a two-part housing (SA, U) having a detachable connection for holding together the housing parts; at least one internal module (Z, K, IO, IR) arranged in a protected area; at least one external module (EO, ER, EK, EKR) arranged outside of the protected area; and at least one optical interface (OSE, OSI) which is arranged in the internal module (Z, K, IO, IR) and/or in the external module (EO, ER, EK, EKR) and is used for communication, including the detection of the opening of the protected area.
摘要:
A reconfigurable bandpass filter including at least a tunable planar combline filter including varactor diodes arranged on a carrier board. For automatic calibration of adjustment of blocking voltage during operation, the reconfigurable bandpass filter includes a filter control offering an external abstracted interface. A memory is connected with the filter control. The memory stores calibration data. For approximating of the best possible filter characteristic, the filter control determines, based on memorized data, the best configuration of tuning voltages.The reconfigurable bandpass filter can be used in the field of secondary radar systems.