Short-wave single-station direct positioning deviation compensation method based on geographic coordinate airspace position spectrum

Abstract

The invention discloses a short-wave single-station direct positioning deviation compensation method based on a geographical coordinate airspace position spectrum, and the method comprises the steps:building an algebraic relation between the geographical coordinate of a short-wave correction source and the two-dimensional direction of arrival of a radiation signal of the short-wave correction source to an observation station, and obtaining the geographical coordinate airspace position spectrum of the short-wave correction source; collecting numerical values near the main peak of the geographical coordinate spatial domain position spectrum of each short-wave correction source, constructing a geographical coordinate spatial domain position spectrum matrix according to the numerical values,and training a radial basis function neural network; establishing an algebraic relational expression between the geographical coordinates of the short-wave target source and the two-dimensional direction of arrival of the radiation signals to the observation station, and obtaining a spatial domain position spectrum about the geographical coordinates of the short-wave target source; and finally, collecting a numerical value near the main peak of the geographical coordinate spatial domain position spectrum of the short-wave target source, and inputting the geographical coordinate spatial domainposition spectrum matrix into the radial basis function neural network to obtain a final estimated value of the geographical coordinate of the short-wave target source. The positioning deviation caused by the ionospheric imaginary height error and the ionospheric inclination angle deviation can be effectively compensated.

Description

technical field [0001] The invention belongs to the technical field of target radiation source positioning, and in particular relates to a short-wave single-station direct positioning deviation compensation method based on geographic coordinate airspace position spectrum. Background technique [0002] As we all know, target radiation source positioning technology has been widely used in communication, radar, target monitoring, navigation telemetry, seismic survey, radio astronomy, emergency rescue, safety management and other fields, and it plays an important role in industrial production and military applications. Target radiation source positioning technology refers to the determination of target position parameters (sometimes including velocity parameters) by receiving wireless signals radiated by the target when the observation station (also known as the sensor) does not actively emit electromagnetic signals. This type of technology belongs to the category of passive pos...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the short-wave single-station direct positioning method in the existing single-station passive positioning method is affected by the ionospheric false height error and the ionospheric tilt angle deviation, which will cause a large positioning deviation, the present invention proposes a method based on geographical coordinates Short-wave Single Station Direct Positioning Bias Compensation Method Based on Airspace Position Spectrum

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