具有良好寬容性的逆波束形成干擾抑制算法研究
doi: 10.11999/JEIT140578 cstr: 32379.14.JEIT140578
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61372180)資助課題
The Research on the Algorithm of Inverse Beamforming for Interference Suppression with Good Robust
-
摘要: 在陣列信號(hào)處理中,逆波束形成干擾抑制算法利用干擾的方位信息估計(jì)干擾信號(hào)從而進(jìn)行干擾抑制,但在復(fù)雜海洋環(huán)境中陣列接收的干擾信號(hào)往往存在相位隨機(jī)擾動(dòng),此方法估計(jì)的干擾信號(hào)與實(shí)際干擾信號(hào)有較大偏差,造成干擾抑制效果不理想。為適應(yīng)干擾相位的隨機(jī)擾動(dòng),具有良好寬容性的逆波束形成干擾抑制算法充分考慮隨機(jī)擾動(dòng)的存在,利用干擾重建矩陣估計(jì)干擾信號(hào),此時(shí)估計(jì)干擾信號(hào)更接近實(shí)際干擾信號(hào),保證干擾抑制有較好的結(jié)果。該文算法充分考慮了復(fù)雜海洋環(huán)境中干擾信號(hào)的相位擾動(dòng),可以獲得較好的干擾抑制效果,提高了算法的寬容性。理論分析、計(jì)算機(jī)仿真結(jié)果均表明該文算法的有效性。
-
關(guān)鍵詞:
- 水下信號(hào)處理 /
- 陣列 /
- 干擾抑制 /
- 逆波束形成 /
- 寬容性
Abstract: In the array signal processing, the inverse beamforming for interference suppression algorithm uses the azimuth information of interference to estimate and suppress the interference. In the complex marine environment the phase of the interference which is received by the array has the random disturbances, there is a big deviation between the actual interference and the interference which is estimated by the algorithm, which makes the effect of the interference suppression not good. In order to adapt the random disturbances of the phase of the interference, the inverse beamforming for interference suppression algorithm with good robust takes the random disturbances into full consideration and uses the interference reconstruction matrix to estimate the interference. In this case the estimated interference is closer to the actual interference signal and the result of interference suppression is better. The proposed method takes the random disturbances of the phase of the interference into full consideration, so it shows good robust in the complex ocean environment. Both the theoretical analysis and the computer simulation results show the effectiveness of the proposed method.-
Key words:
- Under water signal processing /
- Array /
- Interference suppression /
- Inverse beamforming /
- Robust
-
計(jì)量
- 文章訪(fǎng)問(wèn)數(shù): 1336
- HTML全文瀏覽量: 138
- PDF下載量: 407
- 被引次數(shù): 0