Historically, tactical sensor systems have transmitted limited amounts of data. Alert notifications, control signals, and status can be quickly transmitted using low rate data links such as 1200 bps. Increasingly, there is a desire to transmit more data through sensor systems. Signals may consist of E/O or IR images, acoustic or seismic signals, or near realtime target location information. Such capabilities are desired for Future Combat Systems, Objective Force Warrior, and the Objective Force. This paper addresses the ability of existing sensor systems to reliably provide timely transmission of large data files. Specifically, transmission of image files through sensor systems is analyzed. A theoretical analysis gives the probability of error-free image transmission, practical transmission distances, and the transmission time required. Experimental results that validate assumptions made in the theoretical analysis are given. Experimental results show that some existing sensor systems are fully capable of providing low latency, reliable image transmission.
Modern Unattended Ground Sensor (UGS) systems require transmission of high quality imagery to a remote location while meeting severe operational constraints such as extended mission life using battery operation. This paper describes a robust imagery system that provides excellent performance for both long range and short range stand-off scenarios. The imaging devices include a joint EO and IR solution that features low power consumption, quick turn-on time, high resolution images, advanced AGC and exposure control algorithms, digital zoom, and compact packaging. Intelligent camera operation is provided by the System Controller, which allows fusion of multiple sensor inputs and intelligent target recognition. The System Controller's communications package is interoperable with all SEIWG-005 compliant sensors. Image transmission is provided via VHF, UHF, or SATCOM links. The system has undergone testing at Yuma Proving Ground and Ft. Huachuca, as well as extensive company testing. Results from these field tests are given.
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