Abstract: The embodiments of the present disclosure relate to the technical field of signal processing. Disclosed are a MIMO sensor, a method for determining a direction-of-arrival approximation degree, and a target information matching method. The method for determining the direction-of-arrival approximation degree includes: respectively obtaining receiving vectors of a first target and a second target according to a processing result of a multi-channel echo signal, calculating a correlation coefficient between the receiving vectors of the first target and the second target, and determining a direction-of-arrival approximation degree between the first target and the second target according to the correlation coefficient. By using the method for determining the direction-of-arrival approximation degree, the real-time performance of multi-channel echo signal processing can be improved.

Abstract: The radar signal processing method includes: after an echo signal is mixed based on a local oscillator signal, and digital signal processing is performed to obtain a signal to be processed, the signal to be processed is subtracted based on a datum difference frequency signal to obtain a target signal, and a travelling speed of a target relative to a radar and/or a distance of the target relative to the radar is determined according to the target signal. Since the datum differential frequency signal is a signal obtained by mixing a leakage signal based on the local oscillator signal and performing the digital signal processing in a target free environment. Therefore, subtracting the signal to be processed based on the datum differential frequency signal can effectively reduce the content of the leakage signal in the signal to be processed, thereby improving the accuracy of the measurement results.

Abstract: A drip irrigation apparatus and system. The drip irrigation apparatus includes a flow channel body and an elastic body. The elastic body is mounted on the outer circumference of the flow channel body and fitted in a spontaneous state to the outer circumference of the flow channel body. The flow channel body includes an energy dissipation body. The first drainage channel is formed in the energy dissipation body, the first drainage channel is connected to both ends of the energy dissipation body. The first drainage channel is connected at both ends of the first drainage channel to the inner wall of the elastic body forming a radial drainage channel.

Abstract: A test platform for an automatic flushing valve is described. It includes a fluid source, weighing parts, a bracket, a diverter and several driplines. The driplines are parallel to each other and are evenly arranged in an array in a circumferential direction of the diverter. Emitters are installed on each of the driplines; one end of each driplines is fixed to the diverter, which is connected to the fluid source to feed fluid into the driplines. The diverter is pivotally connected to the bracket, so that the diverter and the driplines can pivot relative to the bracket; the other end of each driplines is used to install automatic flushing valves. Weighing parts are installed below the automatic flushing valves to measure the solution flowing out of the automatic flushing valves, and other weighing parts are installed below the driplines to measure solution flowing out of the emitters.

Abstract: A radar angle calibration system is provided according to the present disclosure, including a radar simulator, a receiving horn antenna, a transmitting horn antenna, a turntable, and a controller. The radar is arranged on the turntable, and the radar rotates along with the turntable. The controller is configured to gradually change angle of transmitting the signals with a preset angle step by the turntable to obtain spatial responses of the receiving antenna array corresponding to signal sources in different DoAs, and obtain a spatial response matrix of the receiving antenna array according to the spatial responses corresponding to the signal sources in different DoAs.

Abstract: A test platform for an automatic flushing valve is described. It includes a fluid source, weighing parts, a bracket, a diverter and several driplines. The driplines are parallel to each other and are evenly arranged in an array in a circumferential direction of the diverter. Emitters are installed on each of the driplines; one end of each driplines is fixed to the diverter, which is connected to the fluid source to feed fluid into the driplines. The diverter is pivotally connected to the bracket, so that the diverter and the driplines can pivot relative to the bracket; the other end of each driplines is used to install automatic flushing valves. Weighing parts are installed below the automatic flushing valves to measure the solution flowing out of the automatic flushing valves, and other weighing parts are installed below the driplines to measure solution flowing out of the emitters.

Abstract: A drip irrigation apparatus and system. The drip irrigation apparatus includes a flow channel body and an elastic body. The elastic body is mounted on the outer circumference of the flow channel body and fitted in a spontaneous state to the outer circumference of the flow channel body. The flow channel body includes an energy dissipation body. The first drainage channel is formed in the energy dissipation body, the first drainage channel is connected to both ends of the energy dissipation body. The first drainage channel is connected at both ends of the first drainage channel to the inner wall of the elastic body forming a radial drainage channel.

Abstract: Provided is a cable carrier apparatus with a power supply function. The apparatus includes a chain unit, where the chain unit includes a bottom plate, a side plate is provided on each of both sides of the bottom plate, a slot is provided on the side plate; a detachable plate is mounted in the slot, the chain unit is provided with a mounting hole and a mounting pillar, where a conductive layer is provided on each of both sides of the side plate of the chain unit, and an insulating layer is attached to an upper side of the conductive layer. In this way, the cable carrier can have a power supply function, and strong electricity and weak electricity are separated so as to reduce interferences.

Abstract: Provided is a cable carrier apparatus with a power supply function. The apparatus includes a chain unit, where the chain unit includes a bottom plate, a side plate is provided on each of both sides of the bottom plate, a slot is provided on the side plate; a detachable plate is mounted in the slot, the chain unit is provided with a mounting hole and a mounting pillar, where a conductive layer is provided on each of both sides of the side plate of the chain unit, and an insulating layer is attached to an upper side of the conductive layer. In this way, the cable carrier can have a power supply function, and strong electricity and weak electricity are separated so as to reduce interferences.

Abstract: The present invention includes arginase enzyme inhibitors, compositions comprising these arginase inhibitors, and methods of treating or diagnosing conditions characterized either by abnormally high arginase activity or abnormally low nitric oxide levels in a mammal, comprising administering compositions of the invention to the mammal.

Abstract: The present invention includes arginase enzyme inhibitors, compositions comprising these arginase inhibitors, and methods of treating or diagnosing conditions characterized either by abnormally high arginase activity or abnormally low nitric oxide levels in a mammal, comprising administering compositions of the invention to the mammal.

Abstract: The present invention includes arginase enzyme inhibitors, compositions comprising these arginase inhibitors, and methods of treating or diagnosing conditions characterized either by abnormally high arginase activity or abnormally low nitric oxide levels in a mammal, comprising administering compositions of the invention to the mammal.