CAJ | 학술논문

天线组阵技术是提高深空探测微弱信号信噪比的有效方法。随着大规模天线组阵中单个天线接收信号信噪比的降低，来自背景天体的相关噪声的影响不容忽视。针对相关噪声对天线组阵SUMPLE算法权值估计的影响进行了分析，给出了一种基于频域的抑制相关噪声影响的处理方法。计算机仿真结果表明：在相关噪声背景下，该方法能有效地提高SUMPLE算法权值相位的估计精度，抑制相关噪声的干扰。
천선조진기술시제고심공탐측미약신호신조비적유효방법。수착대규모천선조진중단개천선접수신호신조비적강저，래자배경천체적상관조성적영향불용홀시。침대상관조성대천선조진SUMPLE산법권치고계적영향진행료분석，급출료일충기우빈역적억제상관조성영향적처리방법。계산궤방진결과표명：재상관조성배경하，해방법능유효지제고SUMPLE산법권치상위적고계정도，억제상관조성적간우。
One available method which can increase weak signal's received SNR in deep space network is the technology of antenna arraying. With the reduction of received signal SNR at individual antenna in large-scale antenna array,the effect of correlated noises from background celestial bodies must be considered. In the paper,the impact on the weight estimation of SUMPLE algorithm caused by correlated noises is analyzed;a method based on frequency domain processing which can suppress the impact of correlated noises is given. The results of simulation by computer prove that this method is effective in improving the weight phase estimation accuracy of the SUMPLE algorithm,and suppress the impact of correlated noises.