Description of Operation and Modulation

0575-EX-ST-2012 Text Documents

Thales USA Inc

2012-07-18ELS_127631

The Purpose of this license is the demonstration of equipment in support of Public Safety/Border Security Operations. Thales BOR-A550: (Frequency range requested is 9.22 – 10 GHz) • Modulation type: M (BOR-A is transmitting phase-coded pulses, i.e. PPM, where optimum codes of either +180° or -180° phased subpulses are forming the transmit pulse) • Nature of modulating signal: 2 (digital with modulation) • Information type: X • the pulses comprise of either 1.067 μs or 0.267 μs duration subpulses arranged in codelenghts of either 1, 5 , 13 or 29, i.e. 8 different transmit pulse widths between 0.267 and 30.93μs • the pulses are transmitted in coherent pulse trains of lenghts 64, 128 or 256 at PRFs of either 2858 Hz, 3024 Hz, 3189 Hz, or 3348 Hz (where either a single PRF can be selected or a PRF-4- stagger can be employed) • BOR-A550: the nominal 3dB bandwidth for the shortest subpulse codes (40 m, 0.267 μs) is 4 MHz GO12: (Frequency range requested is 16.38 – 16.82 GHz) • Modulation type: F (linaer FM) • Nature of modulating signal: 2 (digital with modulation) • Information type: X • the pulses are linear FM with a compressed pulsewidth of 0.067 μs. The expanded pulsewidths are either the basic subpulse of 0.067 μs, 0.533 μs (CR8), 1.6 μs (CR24), 5.333 μs (CR80) or 10.67 μs (CR160). • the pulses are transmitted in coherent pulse trains of lenghts 128 or 256 at PRFs of either 4468Hz, 4709 Hz, 4840 Hz, 4978 Hz or 5280Hz (when a single PRF is selected, it will be the middle one; it is also possible to select PRF-3-stagger or PRF-4-stagger where in the former case the middle and the 2 outer PRFs are employed whereas in the latter cases the two outer pairs each are taken) • GO12: the nominal 3dB bandwith, given the 0.067 μs subpulse width is 15 MHz


Document Created: 2012-07-18 12:27:00
Document Modified: 2012-07-18 12:27:00
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