Arbitrary plane measurement control network non-linear least square adjustment data test method
A technique of least squares and plane measurement, which is applied in the direction of measuring devices, complex mathematical operations, instruments, etc., and can solve problems such as arbitrary layout of control networks, limited field operations, and decreased work efficiency.
Active Publication Date: 2021-06-08
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to provide a non-linear least squares adjustment data inspection method for any plane measurement control network, which is used to solve the above-mentioned problems. For example, the existing measurement adjustment and data processing software can only deal with conventional network shapes , such as wire nets, triangular nets (locks), geodetic quadrilaterals, midpoint polygons, angle and distance intersections, etc.
For any control network shape established according to the principle of least squares adjustment, the calculation of the approximate coordinates has not been completely solved, resulting in the failure of subsequent adjustment calculations
In order to solve this problem, the existing survey adjustment and data processing software requires that the initial field survey cannot arbitrarily arrange the network shape of the control network according to the least squares adjustment principle, and the network shape of the control network can only be selected from the conventional network shape, resulting in The field operation is severely restricted, and the network cannot be flexibly deployed according to the actual situation, and the work efficiency is greatly reduced
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Embodiment 1
[0062] like figure 1 As shown, a non-linear least squares adjustment data inspection method for any plane measurement control network is proposed, including the following steps:
[0063] S1: A fast sequential quadratic programming algorithm is proposed to solve the nonlinear least squares adjustment model, so that the calculation of the approximate coordinates of the control points and the least squares adjustment are performed simultaneously, and its fast step adjustment algorithm is updated to obtain the "original linear The least squares adjustment model-converted to a nonlinear programming model-converted to a sequence quadratic programming model-converted to a sequence linear adjustment model" is a non-linear combination algorithm suitable for computer programming calculations;
[0064] S2: On the basis of step S1, a matrix operation method is proposed to transform the indirect adjustment model into a conditional adjustment model, and two sets of data processing methods o...
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The invention discloses an arbitrary plane measurement control network non-linear least square adjustment data test method, provides a matrix operation method for converting an indirect adjustment model into a conditional adjustment model, and adopts two sets of adjustment data processing methods of indirect adjustment and conditional adjustment. Therefore, a comprehensive quality inspection mechanism is introduced in the data processing process, and software debugging and quality inspection functions are achieved.
Description
technical field [0001] The invention belongs to the technical field of engineering surveying, and in particular relates to a non-linear least squares adjustment data inspection method of an arbitrary plane surveying control network. Background technique [0002] Existing survey adjustment and data processing software can only deal with conventional network shapes, such as traverse network, triangulation (lock), geodetic quadrilateral, midpoint polygon, angle and distance intersection, etc. For any control network shape established according to the principle of least squares adjustment, the calculation of the approximate coordinates has not been completely solved, resulting in the failure of subsequent adjustment calculations. In order to solve this problem, the existing survey adjustment and data processing software requires that the initial field survey cannot arbitrarily arrange the network shape of the control network according to the least squares adjustment principle, a...
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IPC IPC(8): G01B21/04G06F30/10G06F17/16
CPCG01B21/04G06F17/16G06F30/10
Inventor 范喆宇游为简葳
Owner SOUTHWEST JIAOTONG UNIV