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31 results about "Radar screen" patented technology

Design method for sea clutter inhibition curve of marine radar based on wavelet transformation

The invention relates to a design method for a sea clutter inhibition curve of a marine radar based on wavelet transformation, and belongs to the technical field of signal processing of the marine navigation radar. Echo data of the radar in the measuring range is decomposed via discrete wavelet transformation, a high-frequency coefficient is zeroed, and a high-level approximate part is used to estimate power level of sea clutters. A corresponding adjustable sea clutter inhibition curve is calculated according to a range parameter and a sea clutter inhibition intensity parameter, and the estimated power level of the practical sea clutters is overlapped with the adjustable sea clutter inhibition curve to obtain a general sea clutter inhibition curve. The inhibition curve design method is highly adaptive to a traditional sea clutter inhibition method relied on statistical characteristics, it is not required to predict distribution which the power level of background clutters obeys in advance, the method has a good inhibition effect for near sea clutters, and the problem that sea clutters surrounding the circular center of a radar screen are hard to eliminate is overcome; and the design method is flexible to use, and includes different inhibition levels, so that a user can carry out sea clutter inhibition of different levels according to practical sea-condition information.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Joint simulation method and device based on heterogeneous system

The invention provides a joint simulation method and device based on a heterogeneous system. The method comprises the following steps: establishing communication connection between a combat simulation system and a radar screen simulator; the simulation engine determines a hosted radar from the combat scheme of the joint simulation, and sends radar parameters of the hosted radar and platform parameters of the combat scheme to the radar screen simulator; the radar screen simulator executes initialization of joint simulation based on the received radar parameters of the hosted radar and the platform parameters of the combat scheme; starting joint simulation, which comprises the following steps: a simulation engine executes first simulation processing, and the first simulation processing simulates the working state of each entity device except for the hosted radar and the maneuvering state of a combat target in a combat range; the radar screen simulator executes second simulation processing based on the simulation result of the first simulation processing and the single-step length, and the second simulation processing simulates the working state of the hosted radar; and integrating processing results of the first simulation processing and the second simulation processing.
Owner:NAT UNIV OF DEFENSE TECH

A Design Method of Sea Clutter Suppression Curve for Marine Radar Based on Wavelet Transform

The invention relates to a design method for a sea clutter inhibition curve of a marine radar based on wavelet transformation, and belongs to the technical field of signal processing of the marine navigation radar. Echo data of the radar in the measuring range is decomposed via discrete wavelet transformation, a high-frequency coefficient is zeroed, and a high-level approximate part is used to estimate power level of sea clutters. A corresponding adjustable sea clutter inhibition curve is calculated according to a range parameter and a sea clutter inhibition intensity parameter, and the estimated power level of the practical sea clutters is overlapped with the adjustable sea clutter inhibition curve to obtain a general sea clutter inhibition curve. The inhibition curve design method is highly adaptive to a traditional sea clutter inhibition method relied on statistical characteristics, it is not required to predict distribution which the power level of background clutters obeys in advance, the method has a good inhibition effect for near sea clutters, and the problem that sea clutters surrounding the circular center of a radar screen are hard to eliminate is overcome; and the design method is flexible to use, and includes different inhibition levels, so that a user can carry out sea clutter inhibition of different levels according to practical sea-condition information.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

A Real-time Fusion Method of Multi-channel Data of Ground Penetrating Radar

The invention discloses a real-time fusion method for multichannel data of a ground penetrating radar. The real-time fusion method for the multichannel data comprises the following steps that 1, band-pass filtering is conducted on radar data of each channel according to the antenna center frequency; 2, a system time zero point is determined, the data of the channels are rearranged and aligned; 3, an original point of a coordinate system is determined, and coordinate transformation is conducted on the observation data of each channel; 4, the comentropy of the data of each channel is worked out; 5, the weighted average fusion rule is adopted for fusion estimation; 6, a gain curve is calculated, and the gain is adjusted. By the adoption of the real-time fusion method for the multichannel data of the ground penetrating radar, real-time fusion is conducted on the data of the channels in the probe process of the ground penetrating radar, and all channel data information can be checked at a time just by displaying a fused data result on a radar screen. Compared with existing method that the data of the channels are checked through switching operation, the real-time fusion method is more easy and convenient and more visual. Meanwhile, the situations that due to the fact that the data of all the channels can be checked one by one, leak detection is caused, and misjudgment is made are avoided.
Owner:中电科(青岛)电波技术有限公司
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