| 摘要 |
<p>PURPOSE: To suppress noise promotion effect and to improve resolution by separately performing filter processing and determining an output value from mutually corresponding processing result with a pair of inverted filter processing circuits using a transfer function where Wiener coefficient values are set to smaller and larger values. CONSTITUTION: The output of a radar reception circuit 1 is digitized by an A/D conversion circuit 3, is rearranged as needed by a rearranging circuit 4, and is inputted to inverted filter processing circuits 5 and 6 in parallel. The circuits 5 and 6 perform inverted filter processing with a transfer function where the Wiener coefficient values are set to smaller or larger values. The output of the circuits 5 and 6 is inputted to an output value generation circuit 7 and the generated output value is displayed by a process result display circuit 8, thus obtaining an output where the distance and azimuth resolutions of a target are improved by filter processing of the circuit 5, obtaining the output where the noise at an echo absence region is eliminated by filter processing of the circuit 6, and obtaining the product of both and the high-resolution and low-noise output.</p> |
