Short-wave single-station direct positioning method in presence of correction source

Abstract

The invention relates to the technical field of short-wave single-station positioning, and discloses a short-wave single-station direct positioning method in the presence of a correction source. The method comprises the steps that a number of short-wave correction sources with known positions are placed in the vicinity of a short-wave target source, and a uniform circular array in a single observation station is used to receive short-wave signal data; the relationship between the azimuth and elevation for signal receiving and latitude and longitude thereof and virtual height parameters of an ionized layer is determined; a cost function on the latitude and longitude of the target source and the virtual height parameters of the ionized layer is constructed based on a signal subspace fittingcriterion; and a Gauss-Newton iterative algorithm is used to jointly estimate the latitude and longitude of the target source and the virtual height of the ionized layer to determine the target position information. Due to the correction source, the method provided by the invention can effectively suppress the influence of the virtual height deviation of the ionized layer on the positioning accuracy of a short-wave signal.

Description

technical field [0001] The invention relates to the technical field of short-wave single-station positioning, in particular to a short-wave single-station direct positioning method under the condition that a correction source exists. Background technique [0002] As we all know, wireless signal positioning technology is 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 positioning (that is, location parameter estimation) can be done using active equipment such as radar, laser, and sonar. This type of technology is called active positioning technology, which has the advantages of all-weather and high precision. However, active positioning systems usually need to rely on the transmission of high-power electromagnetic signals to achieve, so it is very easy to expose its positi...

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Problems solved by technology

[0006] The present invention aims at the problem of the influence of the false height error of the ionosphere, and provides a short-wave single-station direct positioning method under the condition that the correction source exists, so as to improve the single-station positioning accuracy of the short-wave radiation source

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