Time Domain Cyclic Coding and Restoration Method of Continuous Pulse Radar Signal

A technology of cyclic coding and pulse radar, which is applied in the field of radar, to achieve the effect that the signal-to-noise ratio is basically consistent and the recovery process is simple

Active Publication Date: 2020-01-21
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

In addition, the complexity of signal recovery is also an aspect that must be considered by the encoding method
However, current coding methods cannot meet these needs

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  • Time Domain Cyclic Coding and Restoration Method of Continuous Pulse Radar Signal
  • Time Domain Cyclic Coding and Restoration Method of Continuous Pulse Radar Signal
  • Time Domain Cyclic Coding and Restoration Method of Continuous Pulse Radar Signal

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Embodiment Construction

[0049]The invention provides a continuous pulse radar signal time-domain cyclic encoding and recovery method. On the one hand, this encoding method can restore the original echo signal from the intermittent echo signal; on the other hand, it can improve the utilization rate of the transmission energy.

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0051] In an exemplary embodiment of the present invention, a signal time-domain cyclic coding method for continuous pulse radar is provided.

[0052] figure 1 It is a schematic flowchart of a signal time-domain cyclic coding method for a continuous pulse radar according to an embodiment of the present invention. Such as figure 1 As shown, the signal time-domain cyclic encoding method of the continuous pulse radar in th...

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Abstract

The invention provides a signal time domain cycle encoding and recovery method for continuous pulse radar. The method comprises steps that the continuous time Tst of a sub pulse group is acquired according to a farthest action distance Rmax of a continuous pulse radar system; a base-band signal frequency scope is acquired according to a range resolution Rho of the continuous pulse radar system; sub pulse group parameters are determined according to the continuous time Tst of the sub pulse group; cycle encoding of a sub pulse sequence is carried out according to the sub pulse group parameters to acquire a signal encoding sequence T of the continuous pulse radar. The method further comprises a step that an echo signal expression matrix is solved to acquire an echo signal of a single pulse emission signal at each reception window. The method is advantaged in that a signal-to-noise ratio acquired through recovery at each window can be guaranteed to be consistent basically, a utilization rate of emission signal energy reaches 67%, and operand of a signal recovery process is relatively small.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a signal time-domain cyclic encoding and recovery method of continuous pulse radar. Background technique [0002] Miniaturization is an important development direction of Synthesis Aperture Radar (SAR). The focus of light and miniaturization research is: how to reduce the weight, size and power consumption of the radar under the premise of ensuring the performance of the radar. Frequency modulated continuous wave synthetic aperture radar is the result of the combination of frequency modulated continuous wave and synthetic aperture radar applied to the altimeter. Its deskewing receiving system and ultra-large pulse width mechanism greatly reduce the requirements for the digital processing part of the system and the transmitter, thus realizing System miniaturization. However, because it uses two antennas (one antenna is used for transmission and the other antenna is used for recept...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/292G01S7/282G01S13/90
CPCG01S7/282G01S7/292G01S13/9094
Inventor 李和平王岩飞张弛孙宝鹏朱建光高维波
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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