Chaotic radar system with chaotic synchronization

A chaotic synchronization and radar system technology, applied in the direction of using re-radiation, radio wave measurement system, radio wave reflection/re-radiation, etc., can solve the problem of not being able to make full use of chaotic signals, so as to suppress noise, reduce workload, The effect of increasing relevance

Inactive Publication Date: 2007-04-25
ZHEJIANG UNIV
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Problems solved by technology

The practice of obtaining random signals by encoding with pseudo-chaotic sequences or using low-frequency and intermediate-frequency chaotic circuits requires additional modulation of the signals at the radar transmitter end, and the system structure is relatively complicated. However, the direct use of microwave chaotic signals in this patent can make the system structure It is relatively simple; the existing chaotic radar system continues to use the traditional random signal radar processing method, which does not fully utilize the characteristics and potential of the chaotic signal. This patent uses the chaotic synchronization technology to process the chaotic signal, which can greatly improve the overall performance of the radar.

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  • Chaotic radar system with chaotic synchronization

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Embodiment Construction

[0011] As shown in Fig. 1, the present invention comprises microwave chaotic signal source circuit 1, power divider 2, first amplifier 3, transmitting antenna 4, digital controllable microwave delay line circuit 5, receiving antenna 6, second amplifier 7, automatic Adaptive filter circuit 8, chaos synchronization circuit 9, correlation circuit 10, signal processing unit 11 and power supply part.

[0012] (a) Use the microwave chaotic Colpitts oscillator as the microwave chaotic signal source circuit 1. After passing through the power divider 2, a part of the power is sent out through the first amplifier 3 and connected to the transmitting antenna 4; the bandwidth of the chaotic signal sent can exceed 1GHz. Both noise and broadband noise have strong anti-interference ability, and its time-domain waveform is similar to noise, with strong anti-intercept ability;

[0013] (b) After passing through the power divider 2, another part of the power is connected to the digital controlla...

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Abstract

The invention discloses a chaos radar system using chaos synchronization which contains: microwave chaos signal circuit, power distributed device, the first amplifier, transmitting antenna, digital control microwave delaying circuit, receiving antenna, the second amplifier, self-adapting filter circuit, chaos prediction circuit, relative circuit, signal processing unit and electrical source. The signals generated by the microwave colpitts chaos circuit are the signals of radar source, a part of the chaos signals become the transmitting signals, a part engender delaying via the chaos circuit. When the echo signals are received, the echo signals drive the microwave chaos circuit which is as the chaos synchronization, and the output synchronizing signals correlate the local delaying signals to detect the parameters of position and velocity of the radar target.

Description

technical field [0001] The invention relates to a device for measuring distance or speed by using radio waves, in particular to a chaotic radar system using chaotic synchronization. Background technique [0002] The core requirement of modern military radar is to have the lowest probability of interception and excellent anti-interference ability; civil radar puts more emphasis on excellent electromagnetic compatibility performance. The military and civilian radar needs described above are theoretically different sides of the same problem: how to make radar signals more like broadband noise. Similar to the application trend of spread spectrum communication in military and CDMA in commercial wireless communication network, the new system chaotic radar system with ultra-wideband and noise-like power spectrum characteristics will be a development direction of military and civilian radar in the future. [0003] There have been some studies on using the ultra-wideband and noise-l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/28G01S7/34G01S7/36G01S13/02
Inventor 冉立新史治国乔闪
Owner ZHEJIANG UNIV
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