| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radar apparatus capable of quickly calculating a space-averaged covariance matrix by a small-scale configuration. <P>SOLUTION: Averaged covariance matrix calculation means 12 in the radar apparatus includes: a complex data register 20 for storing a complex vector V; a complex data selector 21 for successively selecting complex spectrum components V<SB POS="POST">i</SB>and V<SB POS="POST">j</SB>from elements of the complex vector V; a complex multiplier 22 for successively calculating a complex multiplication value W<SB POS="POST">ij</SB>between the V<SB POS="POST">i</SB>and V<SB POS="POST">j</SB><SP POS="POST">*</SP>; a multistage shift register 23 for successively delaying the W<SB POS="POST">ij</SB>and successively outputting W<SB POS="POST">ij</SB><SP POS="POST">0</SP>to W<SB POS="POST">ij</SB><SP POS="POST">-2τ</SP>; and complex adder 24 means for performing complex addition of W<SB POS="POST">ij</SB><SP POS="POST">0</SP>to W<SB POS="POST">ij</SB><SP POS="POST">-2τ</SP>and successively calculating respective elements S<SB POS="POST">kl</SB>of a space-averaged covariance matrix S: and has a pipeline configuration which while successively calculating respective elements W<SB POS="POST">ij</SB>of a covariance matrix W from the complex spectrum components V<SB POS="POST">0</SB>to V<SB POS="POST">5</SB>, successively calculates respective elements S<SB POS="POST">kl</SB>of the space-averaged covariance matrix S from respective calculated elements W<SB POS="POST">ij</SB>. <P>COPYRIGHT: (C)2012,JPO&INPIT |
