The concept of C/N0 anomaly and the C/N0 anomaly pattern are introduced.

The impact of abnormal noises to prestack mutichannel processing;

The work principle and abnormal noise test method of hind vehicle hydraulic shock absorber are analyzed, Based on experiment data and signal character analyse ,a test method is found to distinguish the abnormal noise of rear hydraulic shock absorber.

The abnormal noise of air conditioner has serious negative influence on the acoustic environment of consumers.

The application of the meshing theory of gear to abnormal noise

Using SIMOVIS software, the cause of abnormal noise in 1 200/125 t overhead crane of left bank power plant of TGP is investigated, and the solving measures for it are introduced.

CNR Analysis of CDMA used in Fiber to the Railway;

Effect of Initialization Conditions on the Reflectivity and CNR of Ge_2Sb_2Te_5 Phase-change Optical Disk;

The influence of the ionosphere,rain,multipath distortion,Doppler shift,the CNR of received signal and the design of the antenna used in the satellite are described.

The noise figure of erbium-doped fiber amplifiers (EDFAs) can be derived from the degradation of carrier-to-noise ratio by the cable TV analyzer.

The computational formula and every influence factor of the carrier-to-noise ratio of CATV system are discussed, the concrete methods of lifting carrier-to-noise ratio are put forward.

Then the multiplex efficiency and the influence of intermodulation term on receivers\' carrier-to-noise ratio are thoroughly analyzed.

Influence of Output Level to Modulator C/N;

Primary Research on C/N Rate of Fibre-optical Network and Nonlinear Distortion;

This paper describes three points:it s hard to measure C/N accurately,video signal from far-front- end makes the relation between C/N and S/N_(w) dis-corresponding,DTV demands C/N lower than analog TV for receiving a good quality picture.