5 results about "Microwave signal processing" patented technology

The invention relates to the technical field, in particular to a grating sensor composite channel-based microwave signal processing method, which comprises the following steps of: capturing time sequence characteristics in a signal through a long-short-term memory network, accurately extracting each frequency component in the microwave signal during frequency spectrum calculation and time domain conversion; the defect that complex signal features cannot be effectively extracted in a traditional method is avoided, the signal is converted from a time domain to a frequency domain, frequency components are enhanced, the frequency, the amplitude and the phase of the signal can be finely adjusted stage by stage in time through a multi-stage recursive correction technology, the result after correction each time can be fed back to the next stage, and the accuracy of signal extraction is improved. According to the method, the quality of microwave signals is gradually improved, signal loss and interference can be remarkably reduced, unnecessary interference and errors in the signal transmission process are remarkably reduced through the intelligent optimization and dynamic correction mode, and the high efficiency and stability of the signal processing process are achieved.

A radar signal processing device (200, 1602, 2001) and method, a radar system (103) and a mobile platform are disclosed. The radar signal processing device (200, 1602, 2001) includes at least two RSPU chips (201), which are interconnected by one or more cascaded methods. The at least two RSPU chips (201) perform cascaded processing on the signals output by the microwave signal processing device. The provided radar signal processing device (200, 1602, 2001) improves the data processing capability of the radar signal processing device (200, 1601, 1602, 2001) and improves the processing efficiency of the radar system (103) by cascading and expanding the RSPU chip (201) according to the signal processing unit dimension or according to the data processing unit dimension included in the signal processing unit; in addition, the RSPU chip (201) included in the radar signal processing device (200, 1602, 2001) can be flexibly expanded according to the needs of various levels of intelligent driving and the increasing signal processing algorithm requirements of vehicle radar.

The application discloses a kind of unmanned aerial vehicle airborne laser microwave mixed response device, belong to spaceflight measurement control and communication field.The device is composed of power supply unit, laser response unit, microwave response unit;Among them, laser response unit includes laser signal processing terminal, laser, transmitting light amplifier, laser transmitting light path and antenna, laser receiving light path and antenna, receiving light amplifier, photoelectric detector;Microwave response unit includes microwave signal processing terminal, Ka upconverter, power amplifier, transceiving distribution network and Ka antenna, low noise amplifier, Ka downconverter.Laser response unit and microwave response unit are interconnected by asynchronous serial port and LVDS synchronous serial port, and the response of laser microwave mixed measurement control communication can be completed.The device can be used for laser measurement control communication response or microwave measurement control communication response in time-sharing mode, and can also be used for laser microwave mixed measurement control communication response, with flexible and simple structure, easy to realize and popularize.

The present invention relates to a signal conversion device for a terahertz radar and a terahertz radar. The signal conversion device for the terahertz radar includes an optical signal conversion unit and a microwave signal conversion unit. The optical signal conversion unit includes an optical reference signal source, a microwave signal generation module, a first optical modulation module, a first optical filtering module, a first optical true delay module, and a first photoelectric conversion module, which are connected in series. The microwave signal conversion unit includes a second photoelectric conversion module, a second optical modulation module, a second optical true delay module, a second optical filtering module, and an analog-to-digital conversion module, which are connected in series. The signal conversion device for the terahertz radar combines microwave and photonic technologies to convert ultra-wideband microwave signal processing into narrowband photon processing above the optical threshold. This overcomes a bottleneck that is difficult to overcome with conventional electronics technology and effectively improves the function and performance of the radar.

A microwave imaging apparatus, including a plurality of microwave sensor assemblies for arranging around an object to be imaged; and a central control component digitally coupled to each of the microwave sensor assemblies; wherein each of the microwave sensor assemblies is operative to: selectively generate and transmit microwave signals at each of a plurality of different frequencies into the object; receive microwave signals scattered and / or reflected by the object; process the received microwave signals to generate corresponding digital signals representing the received microwave signals for each of the plurality of different frequencies; and transmit the digital signals to the central control component; wherein the central control component is configured to: control operation of the microwave sensor assemblies; process the digital signals received from the plurality of microwave sensor assemblies to generate corresponding image data representing an image representing a spatial arrangement of internal features of the object.