Frame synchronization apparatus, measurement apparatus including the same, frame synchronization method, and measurement method

摘要

Problem to be solved: to provide a frame synchronization apparatus capable of accurately detecting the head position even when signal quality is relatively poor.Frame synchronization device 30 includesA reference data string storage section 41 for storing reference data stringsA reference data shift section 32 for sequentially shifting reference data by specifying reference data in an input signal andA complex conjugate product data string generator 42 for generating a complex conjugate data string from a received data string and a reference data string in a range of prescribed sample numbers from the reference data of the input signal andData of the first order data region of a complex conjugate product stringAnd the data area setting unit 31 for setting the end data areaEach time the reference data is defined by the reference data shift unitA correlation value calculating unit 44 for calculating correlation values by performing correlation calculation between each data in the head data area and each data in the end data area, andA head position detector 34 for detecting the head position of a frame based on correlation values and.Diagram