Signal time domain cycle encoding and recovery method for continuous pulse radar

A pulsed radar, cyclic coding technology, applied in the field of radar, to achieve the effect of basically the same signal-to-noise ratio and simple recovery process

Active Publication Date: 2017-06-30
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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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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  • Signal time domain cycle encoding and recovery method for continuous pulse radar
  • Signal time domain cycle encoding and recovery method for continuous pulse radar
  • Signal time domain cycle encoding and recovery method for continuous pulse radar

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Embodiment Construction

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

[0050] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and 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 time-domain cyclic coding method for a continuous pulse radar signal according to an embodiment of the present invention. Such as figure 1 As shown, the signal time-domain cyclic coding method of the continuous pulse radar in this embodiment includes:

[0053] Step S1...

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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 present invention relates to the field of radar technology, in particular to a signal time-domain cyclic coding and recovery method of continuous pulse radar. Background technique [0002] Lightweight and 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 while ensuring the performance of the radar. FM continuous wave synthetic aperture radar is the result of the combination of FM continuous wave and synthetic aperture radar used in altimeters. Its de-skew receiving system and ultra-large pulse width mechanism greatly reduce the requirements on the digital processing part and transmitter of the system, thus achieving Miniaturization of the system. However, because it uses two antennas (one antenna is used for transmitting and the other antenna is used for receiving), the isolation is difficult to be...

Claims

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Application Information

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Patent Type & Authority Applications(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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