The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Type of sparse array</td><td class="align_center"><span style="width: 93.0375ptpx;"><svg height="12.0653pt" id="M88" style="vertical-align:-3.4294pt" version="1.1" viewbox="-0.0498162 -8.6359 93.0375 12.0653" width="93.0375pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M962 650H795L470 145L347 650H176L170 622C268 613 275 606 244 503L190 322C150 188 132 126 118 91C102 50 80 33 18 28L12 0H245L251 28C175 35 170 48 174 93C177 128 191 180 220 284L292 542H294C331 392 383 150 409 4H432L774 555H776L714 137C700 40 694 34 612 28L606 0H868L874 28C793 34 784 37 797 137L849 533C859 612 863 616 956 622L962 650Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,12.22,3.132)"><path d="M389 0V32C297 38 291 46 291 118V635C234 613 175 595 109 583V556L161 554C203 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transform="matrix(.0091,0,0,-0.0091,87.769,3.132)"><path d="M414 144C384 79 371 75 317 75H135L276 221C367 316 408 376 408 465C408 570 327 635 237 635C179 635 131 609 100 575L42 494L67 471C94 510 138 565 205 565C277 565 321 517 321 435C321 348 258 270 195 195C146 137 88 81 33 26V0H411C423 44 433 88 446 135L414 144Z"></path></g></svg></span></td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">CLA</td><td class="align_center"><span style="width: 52.0335ptpx;"><svg height="9.92533pt" id="M89" style="vertical-align:-1.57651pt" version="1.1" viewbox="-0.0498162 -8.34882 52.0335 9.92533" width="52.0335pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M447 623H65C61 580 56 530 47 475H76C100 541 106 550 172 550H388C308 376 196 170 91 -1L98 -12L172 -2C268 204 360 408 455 611L447 623Z"></path></g><g transform="matrix(.013,0,0,-0.013,6.242,0)"><path d="M95 130C70 130 46 113 46 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International Journal of Antennas and Propagation

tab2

Table 2

Table 2: The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays 