are slaved through command/ control networks for target acquisition and "hand-over" to cover large area flight operations. Telemetry data received from them includes rectangular spatial position coordinates, rectangular coordinate velocity data, and signal characteristics that are employed for diagnostics. These instrumentation radars must satisfy an accuracy requirement of 1.5-5.0 meters in position for elevation angles above 15°, and 5-15 meters for the lower elevation angle tracking modes. Where increased accuracy in lower angles is required the video records can be employed with the radar range and coordinate data to improve resolution. .Video processing requires a two-station solution for this application. Previous accuracy requirements are based upon the use in the processing cycle of normal smoothing and predictive filtering processes. As indicated previously the primary effects of the SPS power densities predicted for China Lake, Edwards AFB, and ECHO range cause increased noise in the predetection components of the receivers, reductions in target acquisition range, and increased data error during track. Considering the deployment of radars on these facilities, an increased gap in coverage would result because of the reduced detection range. These comments are also applicable to the TV cameras at Edwards AFB; primarily because problems in the TV detector would be reduced by a factor of 2-3 in particular cameras used at China Lake. This tracking instrumentation must operate over an entire hemisphere to effectively support the operational exercises at these facilities. The SPS effect would be reduced if elevation were limited to approximately 50°, but this limit represents an impossible compromise for the military exercises. The representative instrumentation time line for a normal test involving one or more aircraft includes premission calibration and coordinate slaving, acquisition command cycles, track confirmation, track, event tagging, and hand-over events. This time line indicates the general chronology of the radar and video equipment acquisition and track cycles. The interaction with command/ control networks is indicated in relation to the initiation of different modes. Typical effects of the SPS-induced degradation include uncertainties and delays in acquisition and additional communications activity necessary from the command/control network for instrumentation control and slaving data flow control, and hand-over. Increased gaps in radar coverage and data errors are certain to arise.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==