A Sidelobe Target Suppression Method for Simultaneous Multi-beam Radar

A multi-beam, target technology, applied in radio wave reflection/re-radiation, radio wave measurement systems, instruments, etc., can solve problems such as sidelobe target suppression technology that has not been seen yet, and achieve good adaptability

Active Publication Date: 2020-01-17
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Description
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Problems solved by technology

At present, there is no research literature on sidelobe target suppression technology

Method used

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  • A Sidelobe Target Suppression Method for Simultaneous Multi-beam Radar
  • A Sidelobe Target Suppression Method for Simultaneous Multi-beam Radar
  • A Sidelobe Target Suppression Method for Simultaneous Multi-beam Radar

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Embodiment Construction

[0040] Attached below figure 1 The present invention is further explained.

[0041] The present invention comprises the following steps:

[0042] (1) The radar transmits with a wide beam, and receives with multiple narrow beams at the same time, with a period T in [θ a θ b ] between repeated scans;

[0043] In the embodiment, a continuous wave radar adopts a linear frequency modulation system, a wide beam is used for transmission, and 6 beams are used for reception at the same time, and 8 wave positions are required to scan a 90-degree fan-shaped area. Period T=2.17s, [θ a θ b ]=[0° 90°].

[0044] (2) The radar receives the electromagnetic wave signal reflected by the target, and extracts the target parameters from it. The target parameters include: distance, azimuth, radial velocity, amplitude information and measurement time, which are respectively marked as R, θ, V, A and t;

[0045] In the embodiment, it is assumed that code a is sent at time 16s, the real distanc...

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Abstract

The invention discloses a method for suppressing side lobe targets of simultaneous multi-beam radar, which relates to the method for suppressing side lobe targets in the field of simultaneous multi-beam radar. It uses the relative characteristics of the distance, speed, angle and amplitude of the measurement target on different wave positions in the same measurement frame to determine whether there is redundancy in the target. The method can be used for simultaneous digital multi-beam system and simultaneous analog multi-beam system, which can enhance the detection and processing performance of radar.

Description

technical field [0001] The invention relates to a method for suppressing sidelobe targets in a simultaneous multi-beam system radar, which is suitable for the application of transmitting wide beams and receiving simultaneous multi-beams. Background technique [0002] At present, simultaneous multi-beam technology has many applications in the radar field, and the benefits it brings are beyond doubt, mainly through a longer accumulation time in exchange for the loss of gain reduction. Its advantage is that it can improve the Doppler resolution through a longer accumulation time, and has outstanding advantages in improving the speed measurement accuracy and suppressing slow clutter; As a result, the comprehensive side lobe level of the transmitting / receiving antenna increases, and false targets (images of real targets) will appear when detecting short-range targets. The use of this technology helps to eliminate or reduce the impact of side lobe targets. Since the present inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/28G01S13/02
CPCG01S7/2813G01S13/02
Inventor 马瑞平管吉兴张焱赵华敏温博洪永彬王琳李宗茂陈镜高跃清
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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