Method and system for acquiring integer ambiguity based on dual-frequency carrier signal

The invention discloses a method and a system for acquiring integer ambiguity based on double-frequency carrier signals, and the method comprises the steps: carrying out the wide-lane combination of the double-frequency carrier signals, and building a wide-lane carrier double-difference positioning model; a regularization method is introduced into the wide-lane carrier double-difference positioning model, and a wide-lane integer ambiguity floating solution and a variance covariance matrix are solved; using an LAMBDA method to carry out correlation reduction processing on the wide-lane integer ambiguity, and searching the wide-lane integer ambiguity in an ambiguity domain by taking a wide-lane integer ambiguity floating point solution as a center to obtain a wide-lane integer ambiguity integer solution; substituting the calculated wide-lane integer ambiguity integer solution into a wide-lane carrier double-difference positioning model, and calculating the coordinates of the measurement point for the first time