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A design method of pseudo-random FSK signal

A design method and pseudo-random technology, applied in the field of designing pseudo-random FSK radar signals, can solve the problems of insufficient research on fully utilizing the design signals

Inactive Publication Date: 2007-05-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0016]The linear frequency modulation signal belongs to the analog frequency modulation signal, while the frequency step signal and the random frequency hopping signal belong to the digital frequency modulation signal. The frequency hopping of this signal is usually determined by A pseudo-random sequence control is carried out. At present, more research is on this pseudo-random sequence, but there is no research that makes full use of the characteristic information of the detected target to design the signal.

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  • A design method of pseudo-random FSK signal
  • A design method of pseudo-random FSK signal
  • A design method of pseudo-random FSK signal

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[0070] The signal design is carried out by using the pseudo-random FSK signal design method of the present invention. In the computer simulation, the number of frequency hopping is 32, and the total number of frequency hopping sub-pulses is 64, that is, the signal can be expressed as S-32×64-FSK, and the sub-pulse width T is 0.25us. The obtained results are shown in Figures 2-6. Fig. 2 is the target one-dimensional range image graph at the 0-degree horizon angle of the aircraft-like target. Figure 3 is the amplitude-frequency diagram of the one-dimensional range image of the target, and it can be seen that there are 32 frequency hopping numbers (frequency multipliers). Fig. 4 is the power spectrum of the signal obtained according to the pseudo-random FSK signal design method in the present invention, as can be seen from the figure, the power spectrum of the signal is consistent with the amplitude-frequency pattern of the target one-dimensional distance image. As we all know, ...

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Abstract

The invention discloses a pseudo-random frequency shift-control (FSK) signal design methods. It is based on objective information design features of the pseudo-random FSK signal method. By extracting the target range get signal frequency hopping sequence probability distribution information, limited signal and energy optimization objectives assigned to the important feature information on the frequency. The design methods of the present invention effectively raise the signal energy efficiency, increase energy objective information to enhance the target detection capabilities. The design is a signal spread spectrum signals, in telecommunications has applied reference value.

Description

technical field [0001] The invention belongs to the field of signal design, in particular to the technology of designing pseudo-random FSK (frequency shift keying) radar signals. Background technique [0002] In the field of modern military science and technology, with the rapid development of microelectronics technology and computer technology, the technical performance of radar is also improving rapidly. The ability of radar to observe stealth targets, the survivability and work effectiveness under the conditions of anti-radiation missile (ARM) and electronic warfare (EW) put forward higher requirements. a stronger demand. [0003] The radar waveform design determines some of the most basic performance indicators of the radar, determines the generation of radar signals and the form of the best receiving signal processing equipment, it is one of the important contents of the overall design of the radar. If the radar uses a low-complexity waveform, it is easy to be interce...

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Application Information

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IPC IPC(8): G01S13/06G01S7/28
Inventor 周先敏张占胜唐海于衍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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