,, Work better in near space Advantage – find a global minimum in near space. Nelder-Mead base technique on Rosenbrock function. 1 min 40 sec to solve. - презентация

1 ,, Work better in near space Advantage – find a global minimum in near space. Nelder-Mead base technique on Rosenbrock function. 1 min 40 sec to solve. Nelder-Mead modified technique on Rosenbrock function. 1 sec. to solve. Yield faster solution in case valley-like minimum. Nelder-Mead Technique

2 IP Applications Two patent application concerning with developed Local Positioning System: - Method of wireless network synchronization - Method of user indoor location determination Status – the patens apply to Russian Patent Agency, # , # Once more patent is planned – LPS system as a whole

3 Structure of LPS SW - 1

4 Structure of LPS SW - 2

5 LPS Testing Results The System Coverage Testing was done inside SRC Moscow Office (see previous slide) Maximum distance at which reliable receiving of tag signals by BSs is possible - up to 35 meters indoor Maximum distance at which reliable receiving of beacon signals by BSs is possible - up to 35 meters indoor Service area with 40 meters x 40 meters dimensions can be reliable covered by 5 BSs Positioning Positioning accuracy is strongly depends on level of multipath interference in different points of service area Estimation of tag positioning is unstable Average positioning variation is about 6–7 meters Positioning variation in some points (conditions with low multipath interference) is about 2-3 meters Wireless Communication Wireless communications between BSs and LPS Server is realized using standard b adaptors Maximum distance at which reliable communication is possible – up to 35 meters indoor, data transmission rate vary from 11 Mbps to 1 Mbps in according with b Service area with 40 meters x 40 meters dimensions can be reliable covered by 5 BSs