Research on Algorithm of Three-Dimensional Wireless Sensor Networks Node Localization

Table 1

The elements of the tunneling function and their purpose.

Purpose	Element
(1) Zero point if STRESS is equal to local minimum STRESS
(2) Zero points are the lowest tunneling function values
(3) Avoid a zero point at by erecting a pole
(4) Avoid a zero point at irrelevant transformations of
(5) Ensure sufficiently strong pole (use pole strength parameter , )
(6) Avoid attraction to the horizon
(7) Extend working range of the pole (use width parameter , )
(8) Have multiple poles to avoid different