Abstract: The present invention relates to a multi-layer coupling relationship-based train operation deviation propagation condition recognition method, where the method includes the following steps: (1) recognizing an effective train event time sequence, including an arrival event and a departure event of a train at each passing station; (2) uniformly extracting train activity data, including a stop activity, a section operation activity, a turn-back activity, and an arrival or departure interval activity; (3) constructing coupling relationship groups between a train event and a train activity and between train activities; and (4) performing statistics on changes of train operation deviation in each relationship group, and outputting a respective distribution function and a time-space distribution visualized result. Compared with the prior art, the present invention has the advantages of being practical, automatic recognition, feedback optimization, and the like.

Abstract: The invention relates to an operation diagram-based method for automatically changing a route to turn back in case of interruption. The method obtains an alternative turn-back point according to the position of a fault point and the information of a line turn-back station, calculates a corresponding turn-back plan of the alternative turn-back point according to an operation diagram of the current day, and finally automatically changes an online train route according to the new turn-back plan, so as to realize automatic turn-back of a train after route adjustment in case of interruption. Compared with the prior art, the method has the advantage of being able to keep the compatibility with an existing operation diagram while quickly changing a route in case of partial line interruption, so as to facilitate quick recovery of planned operation after a fault is removed.

Abstract: A method is disclosed, which is carried out by a detection device having a transmitter element for transmitting wave signals and two vertically aligned receiver elements for receiving wave signals, separated by a given spacing. The method includes transmitting, at the transmitter element, a wave signal that is reflected by the target. Each receiver element receives the wave signal reflected by the target, where the wave signal propagates via multiple paths caused by the reflecting surface. While a target distance varies, a phase difference between the reflected wave signals received by the two receiver elements is measured. From the phase difference measurements, a physical quantity fluctuation is determined in relation to the target distance. The information on the target height is then derived from the physical quantity fluctuation.

Abstract: The present invention relates to a multi-layer coupling relationship-based train operation deviation propagation condition recognition method, where the method includes the following steps: (1) recognizing an effective train event time sequence, including an arrival event and a departure event of a train at each passing station; (2) uniformly extracting train activity data, including a stop activity, a section operation activity, a turn-back activity, and an arrival or departure interval activity; (3) constructing coupling relationship groups between a train event and a train activity and between train activities; and (4) performing statistics on changes of train operation deviation in each relationship group, and outputting a respective distribution function and a time-space distribution visualized result. Compared with the prior art, the present invention has the advantages of being practical, automatic recognition, feedback optimization, and the like.

Abstract: The present invention relates to a full-day in each train operation diagram generation method based on a time division scheme and an activity-event relationship, the method including: S1: configuring operation scheme basic parameters; S2: constructing a quantitative relationship between a travel time and a driving interval for different routing ratios and calculating, within a given turn-back time range, an actual turn-back time of each turn-back station that can achieve a routing ratio requirement; S3: generating an arrival event time and a departure event time of a train in each time period at a station platform in accordance with routing division, direction division, and proportion division, correcting a start time and a stop time of each routing in accordance with time period division, and performing transition between the time periods; and S4: connecting a train section operation activity and a stop activity according to the full-time train arrival and departure event times obtained by executing step S3

Abstract: A method includes identifying, from a reflected radar signal, a plurality of single detections corresponding to object surface spots detected by the radar sensor system, wherein the positions of the single detections in a Range-Doppler-map are deter-mined, wherein at least a region of the Range-Doppler map is divided into a plurality of adjacent evaluation regions separated by separation lines, wherein the separation lines extend parallel to one of the range axis and the Doppler axis. For each evaluation region, at least one selected detection is determined which has, among the detections present in the respective evaluation region, an extremal value with respect to the other axis of the range axis and the Doppler axis, and a boundary of the at least one object is determined based on the selected detections.

Abstract: A method of determining an alignment error of an antenna is described, wherein the antenna is installed at a vehicle and in cooperation with a detection device, and wherein the detection device is configured to determine a plurality of detections. Determining the plurality of detections comprises emitting a first portion of electromagnetic radiation through the antenna, receiving a second portion of electromagnetic radiation through the antenna, and evaluating the second portion of electromagnetic radiation in dependence of the first portion of electromagnetic radiation in order to localize areas of reflection of the first portion of electromagnetic radiation in the vicinity of the antenna. The method comprises determining a first detection and at least a second detection by using the detection device, and determining the alignment error by means of a joint evaluation of the first detection and the second detection.

Abstract: In a method for the recognition of an object by means of a radar sensor system, a primary radar signal is transmitted into an observation space, a secondary radar signal reflected by the object is received, a Micro-Doppler spectrogram of the secondary radar signal is generated, and at least one periodicity quantity relating to an at least essentially periodic motion of a part of the object is determined based on the Micro-Doppler spectrogram. The determining of the at least one periodicity quantity includes the following steps: (i) determining the course of at least one periodic signal component corresponding to an at least essentially periodic pattern of the Micro-Doppler spectrogram, (ii) fitting a smoothed curve to the periodic signal component, (iii) determining the positions of a plurality of peaks and/or valleys of the smoothed curve, and (iv) determining the periodicity quantity based on the determined positions of peaks and/or valleys.

Abstract: A method for the recognition of a moving pedestrian by means of a radar sensor system includes the steps of transmitting a primary radar signal into an observation space and of receiving a secondary radar signal reflected by the moving pedestrian. The secondary radar signal is processed, wherein the processing of the secondary radar signal includes the steps of generating a Micro-Doppler spectro-gram of the secondary radar signal, determining, based on the Micro-Doppler spectrogram, an observed bulk speed of the moving pedestrian, determining, based on the Micro-Doppler spectrogram, at least one gait cycle parameter of the moving pedestrian and determining, based on the determined observed bulk speed and the determined gait cycle parameter, an illumination angle between a moving direction of the moving pedestrian and the line of sight.

Abstract: A vehicle-based method to determine the suitability of an object in the vicinity of a vehicle as a suitable positional landmark, comprising the steps of: a) emitting a plurality of radar signals from a vehicle; b) detecting the radar returns from said emitted radar signals reflected by said object; c) analyzing at least one parameter of at least one radar return to determine the extent to which said object is a stationary object; d) analyzing at least one parameter of at least one radar return to determine the extent to which said object is a single scatterer; e) analyzing at least one parameter of a plurality of radar returns to determine the extent to which said parameter varies with the azimuthal angle between said vehicle and said object, f) determining the suitability of said landmark for the results of steps c), d) and e).

Abstract: A vehicle-based method to determine the suitability of an object in the vicinity of a vehicle as a suitable positional landmark, comprising the steps of: a) emitting a plurality of radar signals from a vehicle; b) detecting the radar returns from said emitted radar signals reflected by said object; c) analyzing at least one parameter of at least one radar return to determine the extent to which said object is a stationary object; d) analyzing at least one parameter of at least one radar return to determine the extent to which said object is a single scatterer; e) analyzing at least one parameter of a plurality of radar returns to determine the extent to which said parameter varies with the azimuthal angle between said vehicle and said object, f) determining the suitability of said landmark for the results of steps c), d) and e).

Abstract: A detection device for detecting the presence of a living being at a predetermined location within a monitored area comprises an evaluation unit configured to evaluate radar radiation received by a radar unit from an assigned radar area included in said monitored area in response to radar radiation emitted by said radar unit to detect if a living being is present within said radar area and to localize a detected living being within said radar area, and a detection unit configured to correlate the location of a detected living being in said radar area with a set of predetermined locations in said monitored area to detect the presence of a living being at a predetermined location of said monitored area.

Abstract: A method of determining an alignment error of an antenna is described, wherein the antenna is installed at a vehicle and in cooperation with a detection device, and wherein the detection device is configured to determine a plurality of detections. Determining the plurality of detections comprises emitting a first portion of electromagnetic radiation through the antenna, receiving a second portion of electromagnetic radiation through the antenna, and evaluating the second portion of electromagnetic radiation in dependence of the first portion of electromagnetic radiation in order to localize areas of reflection of the first portion of electromagnetic radiation in the vicinity of the antenna. The method comprises determining a first detection and at least a second detection by using the detection device, and determining the alignment error by means of a joint evaluation of the first detection and the second detection.

Abstract: A method includes identifying, from a reflected radar signal, a plurality of single detections corresponding to object surface spots detected by the radar sensor system, wherein the positions of the single detections in a Range-Doppler-map are deter-mined, wherein at least a region of the Range-Doppler map is divided into a plurality of adjacent evaluation regions separated by separation lines, wherein the separation lines extend parallel to one of the range axis and the Doppler axis. For each evaluation region, at least one selected detection is determined which has, among the detections present in the respective evaluation region, an extremal value with respect to the other axis of the range axis and the Doppler axis, and a boundary of the at least one object is determined based on the selected detections.

Abstract: A method for the recognition of a moving pedestrian by means of a radar sensor system includes the steps of transmitting a primary radar signal into an observation space and of receiving a secondary radar signal reflected by the moving pedestrian. The secondary radar signal is processed, wherein the processing of the secondary radar signal includes the steps of generating a Micro-Doppler spectro-gram of the secondary radar signal, determining, based on the Micro-Doppler spectrogram, an observed bulk speed of the moving pedestrian, determining, based on the Micro-Doppler spectrogram, at least one gait cycle parameter of the moving pedestrian and determining, based on the determined observed bulk speed and the determined gait cycle parameter, an illumination angle between a moving direction of the moving pedestrian and the line of sight.

Abstract: In a method for the recognition of an object by means of a radar sensor system, a primary radar signal is transmitted into an observation space, a secondary radar signal reflected by the object is received, a Micro-Doppler spectrogram of the secondary radar signal is generated, and at least one periodicity quantity relating to an at least essentially periodic motion of a part of the object is determined based on the Micro-Doppler spectrogram. The determining of the at least one periodicity quantity includes the following steps: (i) determining the course of at least one periodic signal component corresponding to an at least essentially periodic pattern of the Micro-Doppler spectrogram, (ii) fitting a smoothed curve to the periodic signal component, (iii) determining the positions of a plurality of peaks and/or valleys of the smoothed curve, and (iv) determining the periodicity quantity based on the determined positions of peaks and/or valleys.

Abstract: A detection device for detecting the presence of a living being at a predetermined location within a monitored area comprises an evaluation unit (21) configured to evaluate radar radiation received by a radar unit (10) from an assigned radar area included in said monitored area in response to radar radiation emitted by said radar unit (10) to detect if a living being is present within said radar area and to localize a detected living being within said radar area, and a detection unit (22) configured to correlate the location of a detected living being in said radar area with a set of predetermined locations in said monitored area to detect the presence of a living being at a predetermined location of said monitored area.

Abstract: An adaptive digital predistortion apparatus and method for transmitting broadband digital signals from a wireless transmitter to a transmitting channel are provided. In the adaptive digital predistortion process, a non-linearity conversion opposite to the transmitting channel characteristic is performed by a digital predistorter for input baseband signals. The predistorted signals are amplified by a power amplifier via an up conversion channel. A part of the signals outputted from the power amplifier are fed back to an adaptive controller via a coupler. The feedback signals are processed by the adaptive controller to obtain out-of-band emission energy of the feedback signals. Using the out-of-band emission energy as a target function, the predistortion parameters are updated by employing a multi-parameter optimum seeking module.

Abstract: An adaptive digital predistortion apparatus and method for transmitting broadband digital signals from a wireless transmitter to a transmitting channel are provided. In the adaptive digital predistortion process, a non-linearity conversion opposite to the transmitting channel characteristic is performed by a digital predistorter for input baseband signals. The predistorted signals are amplified by a power amplifier via an up conversion channel. A part of the signals outputted from the power amplifier are fed back to an adaptive controller via a coupler. The feedback signals are processed by the adaptive controller to obtain out-of-band emission energy of the feedback signals. Using the out-of-band emission energy as a target function, the predistortion parameters are updated by employing a multi-parameter optimum seeking module.