Compared with the conventional methods,the algorithm joins the data stored in range cells around the target to be detected and makes full use of additional information on range so as to form a deeper notch against isolated interference in airspace.

Analyze the GPS frequency,energy,time region and wave,discuss GPS signal monitoring,GPS disturbance technology system,construction of GPS disturbed solid disturbance system and make a useful calculation.

Elimination of matrix interference in the determination of Cd and Pb in soil samples by National Standard method;

It also analyses the major problems which result in cable breakdown, such as the gas interference and the infiltration of the gas into insulating layer of the cable, and proposes some methods to solve these problems.