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High-amplitude picosecond-level micro-power ultra-wideband radar detection system

An ultra-wideband radar and detection system technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of slow switching speed, high pulse amplitude and pulse width of power MOS type field effect transistors, and improve resolution and detection. Effects of depth, increased resolution, and detection range

Inactive Publication Date: 2017-11-07
CENT SOUTH UNIV
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Problems solved by technology

In the traditional pulse source design method, the narrow pulse pulse generated by SRD is very narrow, but the amplitude is small; the pulse amplitude generated by the power MOS type field effect tube is slow, but the pulse width is wide

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] Such as figure 1 A high-amplitude picosecond-level micropower ultra-wideband radar detection system shown is mainly composed of a high-amplitude picosecond-level micropower ultra-wideband radar pulse transmitter, a sampling receiver, a main control computer and an antenna; The ultra-high-level micro-power ultra-wideband radar pulse transmitter generates pulses, which are sent out by aligning the antenna with the detection target, and the pulse echo reflected by the target is received and processed by the receiving sampling circuit of the receiver, and the sampling wave is processed by the main control computer. Signal processing; the pulse...

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Abstract

The invention discloses a high-amplitude picosecond-level micro-power ultra-wideband radar detection system, which is mainly composed of a high-amplitude picosecond-level micro-power ultra-wideband radar pulse transmitter, a sampling receiver, a main control computer and an antenna, and is characterized in that a pulse source in the pulse transmitter is a high-amplitude picosecond-level micro-power ultra-wideband radar pulse source, and the pulse source comprises a driving signal generating circuit, a pre-stage high-amplitude pulse generating circuit, a high-amplitude pulse synthesizing circuit, a post-stage pulse narrowing circuit and a pulse shaping circuit. The high-amplitude picosecond-level micro-power ultra-wideband radar detection system fully combines characteristics and advantages of a field effect transistor and a step recovery diode (SRD), enables the pulse width of high-amplitude pulses generated by the preceding stage to be greatly reduced by using a characteristic of steep cut-off conduction edges of the SRD, and thus enables the output pulses to reach the picosecond level through further compression and overshoot inhibition. The high-amplitude picosecond-level micro-power ultra-wideband radar detection system can improve the impact pulse radar resolution and the detection distance, and provides technical support for applications of ultra-wideband radar.

Description

technical field [0001] The invention relates to the technical field of micro-power ultra-wideband radar, in particular to a high-amplitude picosecond-level micro-power ultra-wideband radar detection system. Background technique [0002] UWB radar is widely used in short-distance communication and precise indoor positioning due to its high penetrating power and ultra-wide signal bandwidth. The ultra-wideband narrow pulse is an important part of ultra-wideband communication and ultra-wideband radar, and also a key part of high-speed sampler. Therefore, a very narrow pulse source with high amplitude is extremely important to the ultra-wideband field. However, the pulse amplitude and pulse width have always been contradictory. The pulses generated by the existing picosecond pulse sources are generally only a few V to tens of V, and the pulse sources above hundreds of V are mostly only nanosecond or sub-nanosecond. In the traditional pulse source design method, the narrow pulse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/282
CPCG01S7/282
Inventor 梁步阁杨德贵赵党军时伟毕莉
Owner CENT SOUTH UNIV
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