In this work, the cross-correlation detection technology is introduced to the signal processing unit of the flowmeter, and a rotary capacitor filter which has high signal-to-noise ratio is adopted, whose filtering mode is adjusted to the signal characteristics of the electromagnetic flowmeter with rectangular wave excitati.

The main characteristic is using the cross-correlation detection & lock-in principle and sine wave generator with DDS controled by DSP.

This paper introduces cross-correlation detection theory and maximum likelihood theory and based on the two theories,puts forward a new method for weak signal detection.

The research of digital correlation detection experiment based on GPIB interface;

An automatic measurement system for extinction ratio in visible spectrum based on correlation detection principle;

Study on correlative detection of LFM pulse compression signal with polarization agility;

The detection theory of resonator fiber optic gyro(R-FOG) based on the serrodyne modulation with two frequencies was introduced,and the correlative detection theory in digital system was analyzed.

Using the excellent correlation property of m-sequence, correlative detection and accumulation algorithms, this method can effectively improve the performance of the laser radar.

In this paper, a method of weight neural network knowledge reason is explored in underwater object autocorrelation detection.

To detect the forged parts in a single image with copy-move attack,an autocorrelation detection method based on phase and amplitude spectrum of FFT is proposed.