Method for solving ambiguity of whole cycles based on array antenna to realize single-frequency attitude measurement

Abstract

The invention mainly belongs to the satellite navigation technological field and relates to a method for solving ambiguity of whole cycles based on an array antenna to realize single-frequency attitude measurement. The method includes the following steps that: a linear array antenna is designed, and antenna array element intervals are configured according to set rules; a carrier phase single-difference equation or a carrier phase double-difference equation is established according to a carrier phase measurement model, wherein the carrier phase single-difference equation is applied to clock-sharing receivers, and the carrier phase double-difference equation is applied to non-clock-sharing receivers; the carrier phase ambiguity of whole cycles of a first group of antennas is solved, and theinitial attitude of a first baseline vector corresponding to the first group of antennas is determined; the carrier phase ambiguity of whole cycles of a baseline vector corresponding to a next group of antennas is calculated according to the initial attitude angle of a baseline vector corresponding to a previous group of antennas, and an attitude angle determined by the baseline vector corresponding to the next group of antennas is solved; a linear array antenna is constructed, and the attitude angle of a carrier is determined. The method of the invention has the advantages of small size, lowpower consumption, low cost and the like.

Description

technical field [0001] The invention mainly belongs to the technical field of satellite navigation, and specifically relates to a method for realizing single-frequency attitude measurement based on an array antenna, and more particularly relates to a method for realizing single-frequency attitude measurement of an unmanned aerial vehicle based on an array antenna. Background technique [0002] Satellite navigation attitude measurement is an important aspect of satellite navigation applications. It is mainly to determine the orientation of the carrier coordinate system relative to the reference coordinate system (generally choose the local horizontal coordinate system), which is generally described by heading angle, pitch angle, roll angle, etc. Satellite navigation attitude measurement technology is based on the principle of satellite navigation carrier phase interferometry to accurately estimate the relative position between the antennas, and then use the baseline vector bet...

AI Technical Summary

Problems solved by technology

In these methods, it is necessary to use observations of multi-frequency signals or determine the integer ambiguity by searching, so more measurement information is required and the amount of calculation is larger

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