Abstract: A radar sensing system is for being disposed on a vehicle. The radar sensing system includes a sensing unit and a housing. The sensing unit includes a receiving antenna array, which includes at least four receiving antennas. The receiving antennas are arranged on an antenna plane and have a receiving antenna center. A distance between the receiving antenna center and a ground plane is greater than 40 cm. The receiving antennas are arranged asymmetrically with respect to the receiving antenna center. The housing includes a bottom surface, which is attached on an outer surface of the vehicle. The sensing unit is disposed in the housing. An antenna plane angle between the antenna plane and the outer surface of the vehicle is in a range of 0 degrees to 90 degrees.

Abstract: A high angular resolution processing method for MIMO system applies a symmetric array antenna for receiving an input signal matrix. The input signal matrix is a transmission signal or reflex signal of at least one target object. The method includes following steps. Step S1: outputting a conversion matrix according to an amount of the symmetric array antenna; step S2: performing a real number conversion using the input signal matrix and a plurality of angle-related pursuit matrixes through the conversion matrix, obtaining a real number input signal matrix and real number pursuit matrixes; and step S3: inputting the real number input signal matrix and the real number pursuit matrixes to an orthogonal matching pursuit model. Obtaining an amount of the target object and an angle of a location corresponding to the target object.

Abstract: A method for estimating object angle with high-angle analysis using a large-scale MIMO array antenna, wherein the array antenna receives the input signal matrix which is the transmission or reflection signal of at least one object. The method includes: step S1: inputting the input signal matrix to a first calculation model to obtain a target object amount and a rough object angle with respect to the location thereof; step S2: inputting the object amount and the input signal matrix to a second calculation model for singular value decomposition to obtain a noise matrix; step S3: obtaining an iteration angle range from the rough angle in S1; step S4: inputting the plurality of pursuit matrices corresponding to the iteration angle range and the noise matrix to a third calculation model for angle range iteration, thereby acquiring an accurate object angle.

Abstract: A high-resolution antenna array includes an equivalent antenna array obtained by arrangement of a first and a second physical antenna array. The equivalent antenna array includes a first and a second equivalent antenna group respectively having a plurality of first and second antenna units arranged at equal intervals. The second equivalent antenna group is translated by a unit interval with respect to the first equivalent antenna group, such that each first and second antenna units are staggered and arranged at intervals along a same direction. A processor obtains a target signal reflected by a target object and carries out a calibration on the target signal to obtain a precise phase difference, thereby obtaining an accurate angle of arrival of the target signal. Thus, through the distribution of antennas, the present invention achieves a high angle resolution and prevents angle ambiguity.

Abstract: A blind spot detection system with speed detection function and device and method thereof are provided. The system is disposed on the rear portion of the vehicle, and includes a signal transceiving module and a central processing unit. The central processing unit includes a speed calculation module and an object detection module. The device includes a main body in which the signal transceiving module is disposed. A first signal is sent toward a detection area behind the vehicle for acquiring a second signal for blind spot detection. By calculation based on the second signal, a third signal is acquired for identifying the static and moving objects, and the relative speed between the vehicle and the static object is determined as the speed of the vehicle. Therefore, the blind spot detection system has a speed detection function.

Abstract: A radar self-calibration device and method are disclosed. The device includes an antenna transceiver module and a processor. The antenna transceiver module has a detection range. The processor is coupled with the antenna transceiver module for obtaining a relative velocity and an angle of the object with respect to the antenna transceiver module in a period of time. The relative angle is the angle included between the object and the driving direction of the vehicle body with respect to the vehicle body. The processor determines if the relative angle is equal to an ideal angle according to a detection model. The detection condition of the detection model includes that when the relative velocity is 0, the ideal angle is 90 degrees. Thus, the present invention assures the correctness of the detected angle through the detection model. When the detected angle is incorrect, the error is promptly calibrated.

Abstract: A high angular resolution processing method for MIMO system applies a symmetric array antenna for receiving an input signal matrix. The input signal matrix is a transmission signal or reflex signal of at least one target object. The method includes following steps. Step S1: outputting a conversion matrix according to an amount of the symmetric array antenna; step S2: performing a real number conversion using the input signal matrix and a plurality of angle-related pursuit matrixes through the conversion matrix, obtaining a real number input signal matrix and real number pursuit matrixes; and step S3: inputting the real number input signal matrix and the real number pursuit matrixes to an orthogonal matching pursuit model. Obtaining an amount of the target object and an angle of a location corresponding to the target object.

Abstract: A method for estimating object angle with high-angle analysis using a large-scale MIMO array antenna, wherein the array antenna receives the input signal matrix which is the transmission or reflection signal of at least one object. The method includes: step S1: inputting the input signal matrix to a first calculation model to obtain a target object amount and a rough object angle with respect to the location thereof; step S2: inputting the object amount and the input signal matrix to a second calculation model for singular value decomposition to obtain a noise matrix; step S3: obtaining an iteration angle range from the rough angle in S1; step S4: inputting the plurality of pursuit matrices corresponding to the iteration angle range and the noise matrix to a third calculation model for angle range iteration, thereby acquiring an accurate object angle.

Abstract: The present invention provides a radar velocity measurement system, method, and radar device. The system includes a radar module and an electrically connected signal processor. The radar module includes a transmission antenna and a receive antenna. The signal processor includes a sequence unit, a conversion unit, and a compare calculation unit that are coupled with each other. The sequence unit establishes an even number receive sequence and an odd number receive sequence. The conversion unit carries out a time domain to frequency domain conversion upon the receive sequences to generate a first reflection signal and a second reflection signal, respectively. The compare calculation unit uses an interpolation method to compare the phase difference between the reflection signals with a comparison model to obtain a true velocity. Therefore, the present invention effectively prevents the velocity ambiguity issue of radar system.

Abstract: A radar monitoring system and a radar monitoring method for monitoring a traffic control zone involve installing two radars near the traffic control zone so that the radars emit radar waves covering the traffic control zone and serve as backups for each other; locating any object in the traffic control zone as a coordinate point with respect to a set of X and Y coordinate axes, and subjecting the X and Y coordinate axes of the two radars to axial normalization, so that an identical object in the traffic control zone is located by the first radar and the second radar at approximately the same coordinate point. An alert area is defined in the traffic control zone and an excluded area around a resident facility in the traffic control zone is excluded from the alert area. When an object in the alert area is determined as an obstacle, an alert is triggered.

Abstract: A multibending antenna structure includes a substrate, a microstrip antenna layer, and at least a decouple unit. The microstrip antenna layer is disposed on one side of the substrate. The microstrip antenna layer includes a plurality of radiation units which are respectively formed in a multibending shape and forming a concave area. The radiation units are sequentially connected to form an antenna array, and a plurality of antenna arrays are disposed in a transversely parallel arrangement, with an interval between each two neighboring antenna arrays. The decouple unit is disposed between the neighboring antenna arrays. When the input end of the radiation unit receives a signal input to emit an electromagnetic wave having a radiation energy, the half-power beam width thereof is increased.

Abstract: A vehicle radar device includes a radar control unit, a first antenna array, a second antenna array, a first circuit board and a second circuit board. The first antenna array is communicatively connected to the radar control unit. The first antenna array includes a plurality of first transmitting elements and a plurality of first receiving elements. The second antenna array is communicatively connected to the radar control unit. The second antenna array includes a plurality of second transmitting elements and a plurality of second receiving elements. The first antenna array is a plurality of circuit board antennas and disposed on the first circuit board. The second antenna array is a plurality of circuit board antennas and disposed on the second circuit board.

Abstract: A vehicle radar device includes a first antenna unit, a second antenna unit, at least one computing unit and at least one circuit board. The first antenna unit and the second antenna unit are communicatively connected to the at least one computing unit. The at least one circuit board includes a first board portion and a second board portion. The first antenna unit is a circuit board type and disposed on the first board portion. The second antenna unit is a circuit board type and disposed on the second board portion. The at least one computing unit disposed on at least one of the first board portion and the second board portion. When an angle between the first board portion and the second board portion is P12, and the following condition is satisfied: 80degrees ?P12?130 degrees.

Abstract: A multimode radar device includes a central processing module, and an antenna module disposed in a middle area of the rear end of a vehicle and electrically connected with the central processing module. The central processing module has a motion determination switch unit, which has a low distance resolution mode and a high distance resolution mode. The motion determination switch unit detects the moving direction of the vehicle. When the vehicle moves forward, the antenna module operates in the low distance resolution mode. When the vehicle reverses, the antenna module operates in the high distance resolution mode. The present invention applies different distance-based resolution modes for blind spot detection and reverse radar detection, so as to fulfill the purpose and demand in different moving motion.

Abstract: A multibending antenna structure includes a substrate, a grounding layer, and a microstrip antenna layer. The ground layer and the microstrip antenna layer are disposed on two sides of the substrate. The microstrip antenna layer includes a radiation unit which is in a multibending shape and formed with a concave area. The length of the radiation unit is equal to 0.8 to 1.2 time the wavelength corresponding to an operation frequency. When the input end of the radiation unit receives a signal input to emit an electromagnetic wave having a radiation energy, the half-power beam width thereof is increased.

Abstract: A warning system for detecting approaching object and method thereof are provided. A detection unit detects a moving path of the approaching object; a storage unit stores a warning information including the warning area and the confirmation condition; and a processing unit receives the detection signal provided by the detection unit to acquire the current moving path of the approaching object. When the approaching object is detected as moving in the buffering zone, the confirmation operation of the confirmation condition is activated. When the moving path falls in the warning area and fulfills the confirmation condition, the processing unit sends out a warning signal. Therefore, a potentially dangerous approaching object is accurately identified, and the warning is correctly sent.

Abstract: A radar system with angle error determination function and method thereof are provided. The system includes a camera device, a radar device, a calculation module, and an angle calibration module. The camera device captures a surveillance image of a surveillance area. The radar device sends a radar signal toward the surveillance area. The calculation module, according to the surveillance image, acquires an image angle of an object with respect to the vehicle in the surveillance area. Also, the calculation module acquires a radar angle of the object with respect to the vehicle which is produced according to a reflection signal generated when the radar signal meets the object. The angle calibration module, by referring to the image angle, correspondingly calibrates the radar angle. Therefore, the radar angle is immediately calibrated.

Abstract: A vehicle radar device includes a radar control unit, a first antenna array, a second antenna array, a first circuit board and a second circuit board. The first antenna array is communicatively connected to the radar control unit. The first antenna array includes a plurality of first transmitting elements and a plurality of first receiving elements. The second antenna array is communicatively connected to the radar control unit. The second antenna array includes a plurality of second transmitting elements and a plurality of second receiving elements. The first antenna array is a plurality of circuit board antennas and disposed on the first circuit board. The second antenna array is a plurality of circuit board antennas and disposed on the second circuit board.

Abstract: A warning system for detecting approaching vehicle and method thereof are provided. The system includes a detection unit detecting a relative distance with respect to the approaching vehicle and a driving path of the approaching vehicle; a storage unit storing a warning information; and a processing unit receiving the detection signal to acquire the current time to collision and the current driving path. When the time to collision is equal to or shorter than the predetermined time to collision, and the driving path falls in the warning area, and the driving path fulfills the confirmation condition, the processing unit sends a warning signal. Therefore, a potentially dangerous approaching vehicle is accurately judged, and the warning is correctly sent.

Abstract: An antenna unit with anti-feed power divider function includes a first substrate, a second substrate, a microstrip antenna layer, a grounding layer, a microstrip wire layer and two vias. The microstrip antenna layer is disposed on an upper surface of the first substrate and has plural microstrip antennas and a high impedance wire connected to the microstrip antennas. The grounding layer is set on a lower surface of the second substrate. The two vias penetrates the first and the second substrates to electrically connect the microstrip wire layer and the microstrip antennas, wherein the two vias have different sizes. An antenna module thereof is also disclosed. The present invention precisely controls the power ratio and phase difference, utilizable for generating a symmetric and asymmetric feeding antenna array, thereby achieving a hierarchical feeding and minimizing the antenna structure.