Measurement data on noise emissions from early SPS prototype development is required to ensure control of noncoherent noise. The EMC between SPS and military C-E equipments points to the establishment of proper specifications and standards to ensure control/quality of future compatible systems. EMC issues are expected to arise that will require technical and managerial attention. EMC issues are design dependent; however, some operational constraints will be required in military C-E equipment usage even with optimal design of the SPS. It is recommended that the SPS program initiate an EMC characteristics life test verification program. Life testing of active transmitting components should be started early in the program. TABLE 1 C-E SYSTEM TYPES AND DEGRADATION C-E System Type Analog Voice Communications Telemetry TACAN IFF Search Radar Track Radar ILS Microwave Relay Monitoring Instrumentation Degradation Criteria Articulation Score and/ or Index Bit Error Rate (BER) or Signal-to-Interference Ratios (S/I) Valid Reply Rate Valid Reply Rate Desensitization and False Alarms RMS tracking error Change in angular direction Bit Error Rate (BER) or S/I (one-of-a-kind equipment, occasionally very sensitive)
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