Method for determining moving target state parameters based on image method

Abstract

The invention discloses a novel method for determining moving target state parameters based on an image method. The novel method comprises the following steps: photographing the target on two fixed points respectively, wherein the object space coordinates of the two fixed points are known, and two cameras are both checked, so that two photos of the same target photographed at the same time at different places can be obtained; secondly, establishing a coordinate system by taking the known left fixed station point as an original point, determining 9 parameters of a stereopair by taylor series expansion and matrix rotation transformation; then determining the coordinate (X1, Y1 and Z1) of a target point to be detected by utilizing a mathematical model (3) which is shown in the specification; finally, obtaining the coordinate value (Xi, Yi, Zi), (i=1, 2, 3,..., n) of the any point of the moving target by the same method; obtaining the distance S from the moving target point to an observation point by utilizing a mathematical model (4) which is shown the specification; obtaining the motion velocity V of the moving target at any time by utilizing a mathematical model (5) which is shown in the specification; and obtaining the motion acceleration a of the moving object by utilizing a mathematical model (6) which is shown in the specification.

Description

1. Technical field [0001] The invention relates to a method for determining the state parameters of a moving target, in particular to a new method for determining the state parameters of a moving target point by an image method based on photogrammetry technology. 2. Technical background [0002] Measuring the state parameters of moving targets has always been a relatively complex problem. So far, the methods for measuring moving targets are only limited to geometric methods, and in the actual measurement process of geometric methods, field measurement is relatively cumbersome, and internal solutions are difficult. The calculation is more complicated, which brings some trouble and inconvenience to determine the state of the actual moving target: [0003] ①Using the traditional geometric method to determine the state parameters of the moving target requires more complicated measuring equipment, and it is difficult to measure when there is no measuring instrument or the equipme...

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Problems solved by technology

[0002] Measuring the state parameters of a moving target has always been a relatively complicated problem. So far, the methods for measuring moving targets are only limited to the geometric method, and in the actual measurement process of the geometric method, the field measurement is more cumbersome, and the office solution is more complex. The calculation is relatively complicated, which brings some trouble and inconvenience to determine the state of the actual moving target object:

[0003] ①Using the traditional geometric method to determine the state parameters of the moving target requires relatively cumbersome measuring equipment, and it is difficult to measure when there is no measuring instrument or the equipment is insufficient;

[0004] ② When the traditional geometric method is used for measurement, the requirements for terrain conditions, climate conditions and visibility conditions are relatively high, especially when the measurement conditions are relatively harsh and it is difficult to observe artificially, the geometric method cannot meet the measurement needs;

[0005] ③ When the traditional geometric method is used to measure the state parameters of the moving target, the real-time performance is poor, and it is difficult to achieve fast, real-time and accurate positioning measurement

[0006] Therefore, the method of determining the motion parameters of the moving object by the geometric method commonly used now has certain limitations. In actual measurement, it brings inevitable troubles and restrictions, and we need to improve it.

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