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Time alignment method used for single or double base complex high-frequency radar nets

A technology of time alignment and radar network, which is applied in the field of hyperspectral remote sensing data simulation and data fusion, can solve problems such as the reduction of kill zone, the reduction of detection accuracy and power, and the decline of combat effectiveness of air defense weapon systems

Inactive Publication Date: 2011-08-10
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the detection accuracy and power of the existing anti-aircraft missile weapon system that uses a single target sensor to operate independently, the detection accuracy and power are greatly reduced, and the kill zone is sharply reduced, resulting in a significant decline in the combat effectiveness of the air defense weapon system, and even the basic loss of combat capability. A Time Alignment Method for Single and Bistatic Composite High Frequency Radar Networks

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  • Time alignment method used for single or double base complex high-frequency radar nets
  • Time alignment method used for single or double base complex high-frequency radar nets
  • Time alignment method used for single or double base complex high-frequency radar nets

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specific Embodiment approach 1

[0013] Specific implementation mode one: combine figure 1 Describe this embodiment, the steps of this embodiment are as follows:

[0014] Step 1: Set simulation parameters; establish a Cartesian coordinate system with the first base station T as the coordinate origin, and set the distance between the first base station T and the second base station R as L, that is, the coordinates of the two stations are: T(0,0) , R(L, 0); then set the moving target P, and set the initial position of the moving target P as P(L, L), and the moving target P is parallel to the first base station T and the second base station R at the speed of vm / s The straight line where it is located moves horizontally; the first sensor A in the first base station T collects data with x seconds as the collection period, and the second sensor B of the second base station R takes y seconds as the collection period to collect data;

[0015] Step 2: Carry out simulation according to the simulation parameters in ste...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination figure 1 , figure 2 and image 3 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is that the curve fitting in step 3 is a spline fitting based on the least squares method, and the spline function is essentially a piecewise polynomial function. A sensor A measures the target n+1 times in a certain observation sampling time period [a, b], and divides the entire observation sampling time interval according to the sampling time: a=t 0 1 n = b, given time point t i The corresponding observed value is: f(t i )=yi(i=0,1,...,n), construct a cubic spline interpolation function s(x), and make it satisfy the following conditions: s(t i )=y i , i=0, 1,..., n; s(t) in each small interval [t i , t i +1] is a cubic polynomial, i=0, 1, ..., n-1; s(t) has a second-order continuous derivative on [a, b];

[0018] The steps to make the cubic spline interpolation function s(x) satisfy the above...

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Abstract

The invention provides a time alignment method used for single or double base complex high-frequency radar nets and relates to the technical fields of high-spectrum remote sensing data simulation and data fusion, solving the problems that the detection precision and the power of the existing antiaircraft missile weapon system adopting single target sensor to independently fight are greatly reduced, and the stricken area is sharply reduced so as to cause the remarkable lowering of the fighting efficacy of the antiaircraft weapon system and to even lose the fighting capability fundamentally. Inthe method, time alignment is already carried out by the system on each sensor when beginning to work; within a period of time hereafter, each sensor obtains a group of data based on sampling time; and the measurement data of the sensors are selected, a curve is obtained after curve fitting is carried out on the data, and the value of other random time is calculated and obtained by the curve after fitting. By utilizing the method, the existing equipment can also be requested to be used in the single or double base complex high-frequency radar net system for improving the target detection precision as much as possible so as to enhance the electronic warfare capability of the entire system.

Description

technical field [0001] The invention relates to the technical field of hyperspectral remote sensing data simulation and data fusion. Background technique [0002] Since the 1990s, the Gulf War, NATO air strikes on Yugoslavia, the Afghanistan War and the Iraq War have successively occurred in the world. Throughout these wars, the attacking side used a large number of measures such as stealth reconnaissance, electronic jamming, stealth bombing, and cruise missile attacks with small radar reflection areas, which effectively inhibited the ability of the defending side's air defense weapons to detect, track, and measure targets. The detection accuracy and power of the anti-aircraft missile weapon system whose target sensor operates independently is greatly reduced, and the kill zone is sharply reduced, which leads to a significant decline in the combat effectiveness of the air defense weapon system, and even basically loses its combat capability. Facing the increasingly severe a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/06H04W56/00H04W84/18
Inventor 许诺魏红江张玉瑶孔芳园位寅生
Owner HARBIN INST OF TECH