Spectrum calculation

Calculate and display the frequency spectrum and time spectrum of acquired broadband signals

Broadband carrier detection

Detect the carriers in the broadband spectrum and output the center frequency, bandwidth and carrier-to-noise ratio of each carrier

Carrier type identification

Identify the types of continuous carrier, TDMA burst carrier, aliasing carrier and DVB-S2 carrier signal

Identification of modulation type

1) Identify conventional digital modulation types, including 2FSK, BPSK, QPSK, OQPSK, π/4QPSK, 8PSK, 8QAM, 16QAM, 16APSK, etc.

2) Identify all kinds of radar signals, including LFM, single carrier pulse, phase coded signal, etc.

Digital signal demodulation

1) Demodulate conventional digital signals and output demodulation constellation map.

2) Demodulate and equalize MPSK/ MQAM signals and 16/32 APSK signals.

Burst signal analysis

Analyze and process burst signals, including burst detection (including number, position and duty ratio), burst modulation identification, burst network station identification, burst demodulation, etc.

Channel code identification

Identify typical satellite channel coding types, including: self-synchronous scrambling code, LDPC, RS, TPC, TCM, convolutional code, etc., with more than 48 types.

Channel decoding

Decode typical BCH, RS, Turbo, LDPC, TCM, TPC and convolutional codes, with more than 48 kinds.

Network station identification

Identify 10 types (at least) of network station signals, and design a self-defined network station identification framework, which is convenient for users to add interested network station parameters according to their requirements.

Broadband carrier detection

Under the condition of C/N≥5 dB, the detection accuracy is ≥90%, the omission rate is ≤5%, and the false alarm rate is ≤5%.

Carrier type identification

For continuous carrier, TDMA burst carrier, aliasing carrier and DVB-S2 carrier signal, the carrier type identification accuracy rate is ≥90% (C/N≥10 dB).

Modulation pattern identification

Correct rate of identification of typical communication signal modulation: ≥ 90% (2FSK: Eb/N0≥9dB, BPSK: C/N≥4dB, QPSK: C/N≥5dB, OQPSK: C/N≥4dB, QPSK: C/N≥5dB, 8PSK: C/N≥10dB, 16QAM: C/N≥10dB

Parameter measurement

1) Carrier frequency measurement accuracy: the carrier frequency measurement accuracy is better than 1E-4(C/N≥10dB) of symbol rate;

2) Signal bandwidth measurement accuracy: the signal bandwidth measurement accuracy is better than 25 kHz for (signal bandwidth ≥1 MHz) and better than 5 kHz for (signal bandwidth ≤200 kHz, C/N ≥ 10 dB);

3) Symbol rate measurement accuracy: the symbol rate measurement accuracy is better than 1E-4 of symbol rate (C/N ≥ 10 dB).

Aliasing signal analysis

Under the condition that the aliasing signal C/N is more than or equal to 10 dB and the carrier power difference is less than or equal to 5 dB, the following performance requirements are met:

1) Identification probability of aliasing signal: better than 90%;

2) Identifiable modulation styles: QPSK, 8PSK, 16QAM;

3) Modulation pattern identification accuracy rate: better than 90%;

Signal demodulation bit error rate

Bit error rate of typical communication signal modulation: ≤1E-3 (2FSK: Eb/N0≥12dB, BPSK: C/N≥8dB, QPSK: C/N≥11dB, OQPSK: C/N≥11dB, π/4QPSK: C/N≥13dB, 8PSK≥16dB, 8QAM: C/N≥15dB, 16QAM: C/N≥18dB).

Code identification

Under the condition that the demodulation bit error rate is 1E-3, the identification accuracy of self-synchronous scrambling code, LDPC, RS, TPC, TCM, convolutional code and other codes is ≥90%, with 48 identification type at least.

Channel decoding

Under the condition that the demodulation bit error rate is less than 1E-3, the decoding accuracy of BCH, RS, Turbo, LDPC, TCM, TPC, convolutional codes and other channels is better than 1E-5, with 48 decoding types at least.

Technical indicator of signal generation format

Source configuration

Random sequence, pseudo-random sequence (m15, m23) and signal file can be selected for the source.

Modulation mode configuration

Configure a variety of digital modulation and analog modulation:

BPSK, QPSK, OQPSK, PI/4QPSK, 8PSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 16APSK, 32APSK, 2FSK, 4FSK, GMSK, AM, DSB, SSB, VSB, FM, 2FSK+FM.

Modulation parameters configuration

Configure normalized sample rate, carrier frequency, roll-off coefficient, modulation index and symbol rate according to user's requirements.

Scrambling code configuration

Self-synchronous scrambling code: (23 18 0)(20 17 0)(20 3 0)(18 1 0)(15 14 0)(15 1 0)(11 9 0)(9 1 0);

Pseudo-random scrambling code: (15 14 0)(12 9 3 2 0)(11 9 0)

Channel interleaving configuration

Interleaving methods include: matrix interleaving, convolutional interleaving and cyclic convolutional interleaving, and the interleaving parameters can be customized.

Configuration of concatenated code such as outer code and inner code

Configurable coding types include: convolutional code, sequence code, TCC, TPC, LDPC, RS, BCH and TCM.

SNR setting

Customize the carrier-to-noise ratio C/N

Coding differential configuration

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Custom setting of block code synchronization header

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Waveform file generation

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