A Novel Algorithm Based on 3D-MUSIC Algorithm for Localizing Near-Field Source

A novel 3-D MUSIC algorithm based on the classical 3D-MUSIC algorithm for the location of near-field source was presented. Under the far-field assumption of actual near-field, two algebraic relations of the location parameters between the actual near-field sources and the far-field ones were derived. With Fourier transformation and polynomial-root methods, the elevation and the azimuth of the far-field were obtained, the tracking paths can be developed, and the location parameters of the near-field source can be determined, then the more accurate resuits can be estimated using an optimization method. The computer simulation results prove that the algorithm for the location of the near-fields is more accurate, effective and suitable for real-time applications.     

加强仓储管理,适应用户需要——中汽南贸公司仓储检查评比

中国汽车工业南方贸易公司,在首季完成商品总销年计划30.1%的情况下,于4月18日至4月29日,对全省仓储工作开展了检查评比。这个公司,包括各直属分公司、处、部、站共有仓库21个,总面积23,802M~2,仓储人员370人。月平均库存9,033方元,平均每平方米堆放3,795元配件。为了更好地