| 摘要 |
<p>PURPOSE: To provide a radar device increasing the limit of the integral time without being affected by the phase fluctuation and the range bin shift due to the Doppler effect of a target by obtaining the two-dimensional signal of the range bin and Doppler bin with a coherent integrating means speed- compensated for the moving target. CONSTITUTION: The two-dimensional complex data of a range Doppler is read out from the two-dimensional memory 52 of a moving target corresponding coherent integrating means 5, converted into the amplitude by a detector 6, and inputted to a Doppler bin selecting means 7. This amplitude is compared with the threshold value by the intensity detector 7a of the selecting means 7, and the amplitude exceeding the threshold value is integrated by a Doppler integrator 7b. These processes are repeated by multiple scans and stored in the memory 8a of a moving target coherent integrating means 8. The Doppler bin is selected in each scan range of the three-dimensional data of the range/ Doppler scan, it is inputted to the integrating means 8 as the two-dimensional data, and the speed and present position of a target are obtained and displayed on an indicator 9.</p> |
