HRPT/AHRPT System Receiver Rack
The receiver rack is supplied as standard with a single LRD-100 digital multi-mode receiver to provide reception of NOAA HRPT and Metop AHRPT data.
If continuous LRIT reception is also required, an additional LRD-100 receiver and USB interface module can be fitted, together with a dedicated antenna and XRIT Ingester software. Alternatively a single LRD-200B digital multi-mode receiver can be supplied to provide HRPT, AHRPT and FengYun-3 L-Band reception, with LRIT reception between satellite passes.
If DMSP reception is required an additional USB interface can be fitted to the receiver rack. However LRIT reception is then not possible unless a separate Dartcom USB LRIT receiver is supplied.
To support the proposed JPSS LRD service the digital multi-mode receivers will require a firmware upgrade, but apart from that the receiver rack is LRD ready.
Receiver rack specifications
|Operating temperature||0°C to +50°C|
|Storage temperature||0°C to +70°C|
|Humidity||30% to 70% non-condensing|
|EMC emissions||EN61000-6-4:2007 A1|
|Electrical safety||LVD 2006/95/EC
|Dimensions (W×H×D)||450×180×455mm including connector projections|
|Power requirements||110–240V AC @ 50–400Hz|
Digital multi-mode receiver specifications
|Signal input range||–90dBm to –20dBm||–90dBm to –20dBm|
|IF conversion||Direct 70MHz, up to 50Msps, 10-bit resolution||Direct 70MHz, up to 50Msps, 10-bit resolution|
|Supported symbol rates||0.1–3.5Msps||0.1–3.5Msps|
|Demodulator modes||BPSK, QPSK, PSK||BPSK, QPSK, PSK, 8PSK, 16QAM|
|BPSK/QPSK performance||BPSK/QPSK within 1dB of theoretical, 0.5dB typical||BPSK/QPSK within 0.4dB of theoretical, 0.2dB typical|
|Convolution decoding||Viterbi, rate ¾||Viterbi, rates ½ and ¾|
|RF inputs||Simulator or signal, selectable||Simulator or signal, selectable|
|Outputs||50Ω TTL clock and NRZ data||50Ω TTL clock and NRZ data|
|Display||LCD, 16-character × 2 line||LCD, 16-character × 2 line|
|Control interface||RS-232 serial via USB serial adaptor||RS-232 serial via USB serial adaptor|