Dual-computer passive positioning method based on azimuth angle and pitch angle information
A passive positioning and pitch angle technology, applied in positioning, radio wave measurement systems, measuring devices, etc., can solve problems such as poor time accumulation characteristics, inability to complete instantaneous positioning, and complex weighted least squares expressions, etc., to reduce The effect of error introduction, improvement of time accumulation convergence performance, and simplification of passive positioning problems
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0023] A dual-aircraft passive positioning method based on azimuth angle and pitch angle information in this embodiment, in order to solve the position coordinates of the positioning target, firstly, according to the actual positioning scene, a dual-station observation model determined / formed by the angle of arrival is constructed, Then by the azimuth and pitch angle seat model input of the arrival signal proposed by the present invention, the high-precision positioning of the target is carried out in consideration of the observation error; the method comprises the following steps:
[0024] Step 1. Construct the space angle observation model between the two observation stations and the target to be positioned, and the incoming azimuth and elevation angle of the target source signal;
[0025] Step 2, using the equation relationship containing angle information to establish a matrix observation equation containing unknown target coordinates;
[0026] Step 3: Using the weighted l...
specific Embodiment approach 2
[0028] The difference from the first embodiment is that in this embodiment, a dual-aircraft passive positioning method based on azimuth and elevation angle information, in the first step, the space between the two observation stations and the target to be positioned is constructed The process of the angle observation model and the incoming azimuth and elevation angle of the target source signal is as follows:
[0029] In the space Cartesian coordinate system, two observation stations conduct angle observation on the radiation source of the target to be positioned at the same time, and obtain a space angle observation model that conforms to the actual scene, as shown in figure 1 As shown, the measured angle information (θ i ,φ i ), observation station (x i ,y i ) and the target to be located (x T ,y T ) The geometric calculation relationship among the three is expressed by the formula (1):
[0030]
[0031] The position coordinates of the target are u=(x T ,y T ,z T...
specific Embodiment approach 3
[0033] The difference from the second specific embodiment is that in this embodiment, a dual-aircraft passive positioning method based on azimuth angle and pitch angle information, in the second step, an equation relationship containing angle information is used to establish a coordinate system containing unknown target coordinates. The process of the matrix observation equation is,
[0034] According to the angle and mutual position relationship, the observation equation of a single observation station is obtained, and the observation equation of observation station 1 is expressed as formula (2):
[0035]
[0036] In the formula, G 1 Represents the observation matrix in the observation equation of station 1; P 1 represents the parameter matrix in the observation equation for station 1; is each position element of the observation matrix of observation station 1;
[0037] Step 21. Combining the observation equation relationship represented by the observation equation of ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More