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v2009.01.01 - Convex Optimization

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292 CHAPTER 4. SEMIDEFINITE PROGRAMMING<br />

1.2<br />

1<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

0<br />

−0.2<br />

−0.5 0 0.5 1 1.5 2<br />

Figure 76: Typical solution for 2-lattice in Figure 71 with noise factor<br />

η = 0.1 . Two red rightmost nodes are anchors; two remaining nodes are<br />

sensors. Radio range of sensor 1 indicated by arc; radius = 1.14 . Actual<br />

sensor indicated by target while its localization is indicated by bullet • .<br />

Rank-2 solution found in 1 iteration (678) (1581a) subject to reflection error.<br />

1.2<br />

1<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

0<br />

−0.2<br />

−0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4<br />

Figure 77: Typical solution for 3-lattice in Figure 72 with noise factor<br />

η = 0.1 . Three red vertical middle nodes are anchors; remaining nodes are<br />

sensors. Radio range of sensor 1 indicated by arc; radius = 1.12 . Actual<br />

sensor indicated by target while its localization is indicated by bullet • .<br />

Rank-2 solution found in 2 iterations (678) (1581a).

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