METHOD AND APPARATUS FOR MEASURING RELATIVE POSITION OF SPACECRAFT BASED ON GNSS DIFFERENCE

Original (Chinese)

The present application provides a method and an apparatus for measuring a relative position of a spacecraft based on GNSS difference. The method includes: acquiring a first long-wave observation combination and a second long-wave observation combination; performing a double-difference ambiguity of whole cycles search according to a pseudo-range double-difference linear equation and a carrier double-difference equation, and determining N first ambiguities of whole cycles to be detected of the first long-wave observation combination and M second ambiguities of whole cycles to be detected of the second long-wave observation combination; determining a first ambiguity of whole cycles and a second ambiguity of whole cycles that satisfy a preset ambiguity of whole cycles condition; and then determining a short-wave double-difference ambiguity of whole cycles to measure the relative position of the spacecraft.