Mitsubishi Denki Kabushiki Kaisha

Yoshimasa Ohhashi

Tetsuo Kirimoto

Kohei Nomoto

A sequential type Fuzzy backward reasoning device is disclosed, which is capable of performing computation progressively every time a feature quantity is observed to update reasoning, and of performing the reasoning even if the order of observations is arbitrary, by providing means for performing the sequential reasoning instead of batch type reasoning means, and feedback means for feeding back a reasoned result. Additionally, a target recognition device is disclosed, which is capable of computing the reliability of a recognized result on a target and outputting the same as a numerical value, by obtaining another recognition information even if there is not obtained any information concerning the target, using said sequential type Fuzzy backward reasoning device.

Fuzzy backward reasoning device

A sequential type Fuzzy backward reasoning device is disclosed, which is capable of performing computation progressing every time a feature quantity is observed to update reasoning and of performing the reasoning even if the order of observations is arbitrary, by providing means for performing sequential reasoning instead of batch type reasoning means, and feedback means for feeding back a reasoned result. Additionally, a target recognition device is disclosed which is capable of computing as a numerical value the reliable degree of a recognized result on a target by obtaining another recognizing information even if there is not obtained any information concerning the target, using said sequential type Fuzzy backward reasoning device.

An apparatus, usable in a radar system, for generating a multi-value orthogonal sequence includes a multi-element M-sequence generator and a component substituting device. The M-sequence generator comprises a shift register including delay elements, multipliers for multiplying signals output from the respective delay elements by feedback factors, and adders for adding the multiplied signals from the multipliers to provide the result to the delay element initially arranged in the shift register whereby a multi-element M-sequence is generated from the delay element finally arranged therein. The substituting device comprises a microcomputer and substitutes each component of the M-sequence with one of complex-numbers, Z.sub.o, Z.sub.i, . . . Z.sub.q-1 in such a manner that when the component is 0, it is substituted with Z.sub.o .noteq.0, and when it is .epsilon..sup.i (i=1, 2, . . . q-1), it is substituted with z.sub.i, where the set of Z.sub.o, Z.sub.i, . . . Z.sub.q-1 are the solution of the following simultaneous algebraic equations: ##EQU1## where mod.sub.q-1 (.multidot.) represents a calculation of modulo (q-1) and is expressed as q-1 when the result is 0, * represents a complex conjugate, and r=1, 2, . . ., q-2.

Growing community of inventors

Kanagawa, Japan

Yoshimasa Ohhashi