Adaptive Mti And Transmit Beam Formation To Achieve The Research

Now the environment where the radar works has become more and more bad, not only suffers so many interferences from the natural environment, but also some interferences from the enemy. So the capability of anti-interference has become a radar's important performance. To the various kinds of clutters, the adaptive linear predictive MTI filter is applied. In this paper several adaptive MTI filters based on the linear prediction are brought and combining with the simulations we analyze the filter performance. To improve the anti-interference capability of a radar, adaptive digital beamforming is another method. But now almost all the researches on the techinique are based on the receiver, little has done on the transmitter. So the research based on the transmitter becomes one aspect of our work. In our work we apply the Phase-Only adaptive array interference nulling algorithm in the transmitter. The most important feature of the Phase-Only nulling method lies in only using the phase information of the array for nulling, in other words,it can make full use of the abilities of transmitting function modules and decrease the cost of the whole system. Based on the above methodes, in this paper we discussed in detail the design and the implementing of the adaptive anti-interference experiment system, it includes the realization of the simulation data source, the hardware and the software realization of the Data-Interface board, the realization of the DDS for DBF and the realization of the anti-interference algorithm on DSP. In the final, the experiment results are brought. Those results prove the performance of the methods mentioned in the above.