Radar signal source system of frequency stepping system

A technology of radar signal and frequency stepping, which is applied in the field of radar to achieve the effect of reducing the output signal bandwidth, avoiding many strays, and facilitating frequency adjustment
CN108344977AInactive Publication Date: 2018-07-31INST OF ELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF ELECTRONICS CHINESE ACAD OF SCI
Publication Date
2018-07-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a radar signal source system of a frequency stepping system, and the system comprises a step frequency baseband subsignal circuit which outputs a step frequency baseband subsignal B1; a first-stage signal conditioning circuit which outputs a step frequency signal B4; a second-stage signal conditioning circuit which carries out the frequency mixing with the step frequency signal B4 in a frequency mixer, successively adjusts the central frequency and bandwidth of the step frequency baseband subsignal, and obtains a UWB (ultra wide band) step frequency signal with the bandwidth B. The first-stage signal conditioning circuit and the second-stage signal conditioning circuit respectively comprise a frequency mixer, a local oscillator, a high-speed switch, and a filter. Through the successive adjustment of the central frequency and bandwidth of the step frequency baseband subsignal, the UWB step frequency signal is obtained, and the system can achieve the quick switching of the frequency.
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Description

Technical field

[0001] The present disclosure relates to the field of radar technology, and in particular to a frequency stepped radar signal source system. Background technique

[0002] With the development of modern radar technology, the function of simple measurement of target distance possessed by traditional radar is far from meeting actual needs. How to perform high-resolution imaging of the target, and then realize the detection and identification of the target has become an important direction of radar technology research. According to the basic principles of radar, high range resolution needs to be obtained by transmitting large broadband signals. As a high-resolution signal with a large time-bandwidth product, the frequency stepped signal can synthesize a larger working bandwidth with a smaller instantaneous bandwidth, which reduces the requirements for system hardware while improving the range resolution.

[0003] In 1999, the Stanford Research Institute in the United ...

Claims

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