Eliminating TDOA location ambiguity about HPRF signal based on correlation algorithm;

This paper improves the traditional impedance measurement method by correlation algorithm based on virtual instrument technique, discusses the design ideas of micro-impedance instrument based on USB bus in detail and expounds the hardware system module and the core algorithm based on correlation principle.

Focusing on the obstacle-detection in the robot working space, this paper presents a new detection method which is different from the conventional ultrasonic range measurement, makes research on the theory about ultrasonic range-measurement of extremely short-range obstacle in sphere space and avoid cross talk by using the correlation algorithm, improving ultrasonic range measurement precision.

In recent years, with the development of integrated circuit and computer technology, correlation detection can be achieved more economically.

Image processing of the flow field of agitator based on cross-correlation algorithm;

PIV technique based on cross-correlation algorithm;

Through performing the researches on both key parameter calculating method and measure accuracy improving method in the cross-correlation algorithm,a number of locating experiments were conducted for leaked point.