Abstract: Methods and apparatus for determining geo-locations. The geo-location system of one embodiment includes two or more angle determination devices and a location determination device. Each angle determination device is mounted on top of a tower. The towers are positioned a distance from each other. Each angle determination device is adapted to automatically determine the angle of incident of a received signal and transmit a determined angle signal containing the determined angle. The location determination device is adapted to automatically use spatial triangulation techniques on received determined angle signals to provide location information.

Abstract: A method to dynamically schedule communication between a master and slaves in a variable slave population in a master-slave wireless network. The method includes receiving a first interrogation phase command signal from the master, transmitting a response signal to the master responsive to the first interrogation phase command signal after a current time interval, the current time interval based on a current time slot selection, receiving an acknowledgment list from the master responsive to the transmitted response signal, determining whether the current time slot selection matches a master-filled time slot based on the acknowledgement list, and modifying an affinity value based on the determination.