Abstract: An integrated position determination system and communication system is disclosed that includes an antenna and that includes position signal processing circuitry for determining position. The integrated position determination system and communication system also includes a radio for communicating with other position determination systems that is coupled to the position signal processing circuitry and a power supply. The integrated position determination system and communication system also includes a range pole to which the other components of the integrated position determination system and communication system are attached. The components of the integrated position determination system and communication system are located such that the system is both horizontally balanced and vertically balanced. More particularly, the integrated position determination system and communication system is horizontally balanced about the centerline of the range pole and is vertically balanced about a carrying point.

Abstract: A tape measurement apparatus is provided for measuring the slope height of a GPS surveying system receiver, with an integral antenna, which is vertically suspended over a ground mark. A tape mounting hook is provided for securing the distal end of a tape measure in a location which is known precisely with respect to the phase center of the GPS receiver. The tape measure housing has a pointer arm of precisely known length which extends out from the tape measure housing in a direction opposite and parallel to the normalized line of extension of the tape from the housing. A distance scale imprinted on the tape compensates for the combined lengths of the housing and pointer arm so that a user can read the uncorrected slope height of the GPS receiver directly from the scale while applying the tip of the pointer arm to the ground mark.