Digilogic’s Telemetry receiver design is highly flexible and provides comprehensive link support for satellite and flight test ground station applications in a fully integrated package. Our telemetry receiver design features FPGA based signal processing and software defined radio technology in the form of digital telemetry receivers, waveform & signal processors.
A variety of configurations (Single, Dual) and waveforms (AM, FM, PM, BPSK, QPSK & SOQPSK) are available with standard data rates from 40 Mbps down to 100 kbps. It also supports Automatic Gain Control, AM Tracking, Diversity Combining, Equalization, Demodulation of PCM-FM & SOQPSK-TG, Bit Synchronization, Frame Synchronization, LDPC and Convolutional Decoding, and Telemetry Over IP (TMoIP) as per IRIG Standard.
Telemetry Receiver system also has an in-built test signal generator, to test the performance of complete receiver chain without any external source. The system also provides access to downconverted IF signals, Bit sync outputs, Data & Clock signals for analysis with any external systems. All these I/Os are available through connectors on rear side of the unit. As the system design is indigenous & FPGA based, any kind of customization needed towards any new modulation schemes can be incorporated in the system.
|
Parameter
|
Specification
|
|---|---|
|
Frequency |
2.2 to 2.3 GHz |
|
Tuning Resolution |
10 kHz |
|
LO Frequency Stability |
1 ppm/°C, 1 ppm/year |
|
IF Signals |
70 MHz center frequency |
|
Noise Figure |
< 5 dB |
|
Dynamic Range |
Sensitivity to -10 dBm |
|
Impedance |
50 Ω |
|
VSWR |
< 2 |
|
Gain Control |
Automatic & manual |
|
AGC Time Constant |
0.1 ms, 1 ms, 10 ms & 100 ms |
|
Doppler Shift |
±125 kHz |
|
Doppler Rate |
500 Hz |
|
Image & Spurious Rejection |
60 dB min |
|
Input Line Coding |
NRZ L/M/S, Bi-φ L/M/S (with PCM/FM & PCM/PM), RNRZ (PN-11/15) |
|
Demodulation |
AM, FM, PM, BPSK, QPSK & SOQPSK-TG |
|
Pre-d Processing Bandwidth |
16 filters with BW ranging from 250 kHz to 36 MHz |
|
Post-d Filtering Bandwidth (FM/PM) |
10 filters with BW ranging from 70 kHz to 15 MHz & bypass |
|
Data Output |
Data (NRZL) and Clock in low-power TTL |
|
Bit Synchronization |
|
|
Data Rate |
100 kbps to 20 Mbps (for all modulation schemes) |
|
Data Rate Resolution |
1 bps |
|
Re-acquisition Threshold |
-6 dB, Eb/N₀ or better for all schemes |
|
Re-acquisition Time |
250 bits for Tier-0, 350 bits for Tier-1 |
|
BER |
10⁻⁶ at Eₛ/N₀ of 9 dB up to 10 Mbps |
|
Special Processing |
CMA equalizer for frequency & polarization diversity; Ratio Combining, Trellis-based FM detection & LDPC decoding, Convolution decoder |
|
I/O Connectivity |
|
|
RF |
Input:02 No; Output: 01 No (test generator) |
|
IF |
Input: 02 No; Output: 03 No (individual & combined) |
|
Video |
Input: 02 No; Output: 04 No (individual & 10 MHz RefOut) |
|
Low-bandwidth Output |
AME: 02 No; AGC: 03 No |
|
Low-bandwidth Input |
03 No |
|
PCM |
Input: 02 sets (data & clock); Output: 03 sets (data & clock) |
|
Ethernet |
TMoIP – 02 No; Config & Monitoring – 01 No |
|
Display |
HDMI/VGA – 01 No |
|
Physical |
|
|
Size |
1 RU, 19” rack mountable |
|
Power |
100 to 240 VAC, single phase, 40 to 60 Hz |
|
Mass |
< 5 kg |
|
Environmental |
|
|
Temperature (Operating) |
0 to 50 °C |
|
Temperature (Storage) |
-20 °C to 70 °C |
|
Humidity |
95 % non-condensing |
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Digilogic Systems Limited., headquartered in Hyderabad, is an AS9100D and ISO 9001:2015 certified company offering test solutions and simulation systems for defence and aerospace sectors.
#102, 1st floor, DSL Abacus Tech Park, beside DSL Virtue Mall,
Uppal, Hyderabad, Telangana-500039.
#216, 3rd Floor, Zareen Heights, Varthur Road, Nagavarapalya,
C. V. Raman Nagar, Bengaluru, Karnataka – 560093.
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