As for island effect of the distributed generation system,active power disturbing method is applied to the island detection for the superiorities of small blind spot and non-meritorious harmonic interfere.

This paper studies the influence of noise jamming on the radar detection probability,deduces the relation between radar detection probability and effective jamming power of jammer & the relation between the detection probability and the jamming distance under the self-protection jamming condition through mathematical theory,analyzes it through the simulation.

The calculation of radar cross-section and jamming power on chaff cloud is deduced based on the analysis of the chaff s material and the jamming theory and technique.

This paper gives a model of airborne SAR jamming power based on mathematical model,digital signal processing theory and matlab software platform to improve efficiency of designing airborne SAR jamming power system.

The calculation of the real time range,jamming power and sensitivity is deduced,based on the analysis of the weapon system s performance.

This text emphasizes interference probability and signal intensity, repeated frequency and interference power that decide dinterference effect was discussed, and their quantitative range by calculation was gained.

The improved algorithm makes use of the results from channel estimation to calculate the interference power of ISI (Inter Symbol Interference) and MUI (Multiple User Interference),and subtracts the interference power from the total noise power in the receiver,thus a proper noise power of AWGN is obtained.

Method of improving chaff-interference by the active jamming;

Study of the active jamming on polarimetric radars;

Finally,the current situation of the laser active jamming equipment is described.

In this paper,we mainly research on the problem of hybrid adaptive pole placement for a single-mput single - output system with bounded disturbance and give a indirect hybrid adaptive pole placement scheme.