Estimating Direction of Arrival by Using Two-Dimensional State-Space Balance Method

<div>RMSEs of azimuth and elevation angles against with SNR for the closely positioned sources, where <svg height="14.2262pt" id="M108" style="vertical-align:-3.429501pt" version="1.1" viewbox="-0.0498162 -10.7967 99.5852 14.2262" width="99.5852pt" 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="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path></g><g transform="matrix(.013,0,0,-0.013,4.498,0)"><path d="M475 507C475 612 440 712 326 712C139 712 23 420 23 215C23 96 58 -12 180 -12C369 -12 475 293 475 507ZM391 522C391 486 387 448 379 394H126C155 538 222 677 310 677C386 677 391 571 391 522ZM373 346C344 193 283 22 189 22C126 22 106 114 106 196C106 243 111 293 118 346H373Z" id="g113-230"></path></g><g transform="matrix(.0091,0,0,-0.0091,10.647,3.132)"><path d="M389 0V32C297 38 291 46 291 118V635C234 613 175 595 109 583V556L161 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International Journal of Antennas and Propagation

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Figure 3

Figure 3: Estimating Direction of Arrival by Using Two-Dimensional State-Space Balance Method 