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System and method for receiving ultra wide band pulsed radar

An ultra-wideband pulse and ultra-wideband receiver technology, applied in the field of ultra-wideband pulse radar receiving systems, can solve the problems of difficulty in implementation, high cost, and impracticality, so as to improve resolution and imaging accuracy, reduce system cost, and structure small effect

Active Publication Date: 2011-08-10
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

The transmission signal of the non-carrier frequency pulse ground penetrating radar is a picosecond or nanosecond pulse signal. If the echo signal is directly collected, the conversion rate of the A / D converter will be extremely high, not only the cost is high, but also in the When the signal center frequency is greater than 500MHz, it is extremely difficult or even unrealistic to realize

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  • System and method for receiving ultra wide band pulsed radar
  • System and method for receiving ultra wide band pulsed radar
  • System and method for receiving ultra wide band pulsed radar

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Embodiment Construction

[0052] The ultra-wideband pulse radar receiving system of the present invention is an ultra-wideband receiving system based on the principle of equivalent time sampling, which samples and receives wideband signals carrying target information, reconstructs its baseband signals, and uses low-cost A / D for data processing. collection.

[0053] See figure 1 , is a schematic diagram of the framework of the ultra-wideband radar system of the present invention, including a transmitter, a receiver and a radar control unit. The radar control unit is connected with the transmitter and the ultra-wideband receiver to control the clock of the transmitter and the ultra-wideband receiver; wherein, the ultra-wideband pulse radar receiving system of the present invention includes an ultra-wideband receiver and a control unit, both of which are integrated on a module . The control unit is respectively connected with the host computer, the transmitter and the ultra-wideband receiver to control ...

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Abstract

The invention discloses a system for receiving an ultra wide band pulsed radar, which is composed of an ultra wide band receiver and a control unit, wherein the ultra wide band receiver takes a sampling phase detector (SPD) as the key component of a receiver sampling gate; a microwave triode is used for generating sampling pulses by combining with a capacitance charging and discharging process; and the sampling bandwidth is 6GHz; and the control unit takes a PIC (peripheral interface controller) singlechip as a core and provides a sampling clock signal for the receiver by combining with a programmable time delay chip. In the system for receiving the ultra wide band non-carrier frequency pulsed radar, the waveform of an ultra wide band signal from an antenna can be accurately reconstructed so as to collect signals by low-speed A / D and lower system cost.

Description

technical field [0001] The invention relates to the technical field of radar reception, and is an ultra-wideband pulse radar receiving system and method, which provides a reliable and effective solution for pulse-type ultra-wideband radar to sample and receive radar echo signals with a bandwidth up to several GHz, and reduces the the cost of the radar system. Background technique [0002] Ultra-wideband pulse radar is a time-domain imaging detection system that works under the nanosecond pulse system without carrier frequency. It involves time-domain transient electromagnetic field and electromagnetic wave theory, ultra-wideband antenna theory and technology, and transient signal detection and processing. technology, microelectronics and other disciplines. Usually, there is a non-electromagnetically transparent dielectric barrier between the detection radar and the detection object. This dielectric barrier keeps the radar and the target in different free spaces and blocks t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/285
Inventor 刘丽华陈洁黄琼吴秉横孟升卫方广有
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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