Signal processing in recursive rejection filters in the transient mode

Synthesis and Analysis Non-recursive Rejection Filters Transient Mode

“…For the synthesis of the modernized RF structure in the transient mode, similar to [16], we use the method of state variables, which gives the adequate filter description in the time domain. Being a discrete system, the digital nonrecursive RF of m -order in the k -th time moment can be described by some state vector…”

“…The value of initial state vector (0) X , which is obtained as a results of a synthesis, in contrast to [16] assumes the sample ) 0 ( u arrival at outputs of all RF delay units at the moment of clutter edge appearance. Since in the classic RF diagram, the (0) u sample does not pass to outputs of delay units and, accordingly, the vector (0) 0 = X , then, to satisfy the condition (6), we must require introduction of units, which perform the RF structure adjustment.…”

“…At coincidence of the antenna beam position during discrete scanning and the clutter > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < 2 editions [6][7][8][9][10][11][12][13][14][15], the problem of improvement of rejection filter characteristic with the purpose of transient reduction is not solved. The exclusion is the publication [16], in which the problem of transient acceleration is solved for the recursive rejection filters. This is achieved by means of switching of recursive connections after achievement the steady-state mode in the non-recursive part of RF.…”

“…The difference equation ( 1) solution, at known processed sample beginning, similar to [16], is the following vector…”

“…A problem of moving target selection on the clutter background, properties of the clutter, novel promising methods of the clutter rejection effectiveness growth and various aspects of this problems are permanently described in Russian and foreign scientific-engineering periodic journals [6][7][8][9][10][11][12][13][14][15][16]. Nevertheless, this scientific direction cannot be considered as fully studied.…”