According to dissimilar sensor asynchronous data fusion can achieve information implementarity and enhance target track precision,a dissimilar multisensor asynchronous data fusion arithmetic based on variable sampling rate is presensed.

To sum it up,the main aspects of this paper as follows:First,a solution of the self-adaptive variable sampling rate and resolution data acquisition system is presented,introducing the hardware design and the software of the solution respectively.

Aiming at the problem of variable sampling rate sensor multi-target tracking in clutter,considering the ability that Secondary Surveillance Radar(SSR) can identify enemy or friend target and enhance the accuracy of tracking enemy target,a SSR modified unscented Joint Probabilistic Data Association(JPDA) tracking algorithm is proposed for multi-sensor asynchronous system.

Cascaded integrator comb(CIC) filters are widely used for sample rate conversion,but the large distortion of the pass band and the small attenuation of the stop band limit its applications.

Directed at overcoming the pressure on DSP computation exerted by huge data quantity due to intermediate frequency sampling in the baseband in software radio system,the paper introduces the use of the technique of sample rate conversion in the receiver/sender and cascade integrator comb(CIC) filter to realize digital sampling rate conversion.

Directed at overcoming the pressure on DSP computation exerted by huge data quantity due to intermediate frequency sampling in the baseband in software radio system,the paper introduces the use of the technique of sample rate conversion and cascade integrator comb(CIC) filter to realize digital sampling rate conversion.

In this paper,a modified multiphase filtering algorithm based on direct decimation after multiphase interpolation is proposed,by which sampling rate conversion with arbitrary fraction for wideband signals can be implemented successfully.