Airborne and Missile-Borne Measurement and Control System
Product profile and purpose
Airborne and missile-borne measurement and control system mainly completes acquisition, encoding and modulated emission of aircraft sensor signal, digital signal, and image information. In the meantime, it can also receive and demodulate the control command and safety control command sent by the ground measurement and control station, and then send to the command execution mechanism to complete flight control and safety control of the aircraft, and send the received command information to the ground receiving station via telemetry link, to confirm whether the aircraft has received the command or whether the communication link is unblocked or not.
Main characteristics
● It can receive dual-channel or one-channel (left or right revolve) intermediate-frequency signal, and has the function of left-right polarization diversity synthesis.
● It has the function of digital intermediate-frequency demodulation function, and can make MSD detection and TPC decoding, which is optional via the upper computer software.
●It has the function of PCM simulator, and can output analog PCM signal to complete self-inspection of single-board video loop; it has the processing capacity for encryption and decryption interface of PCM data.
Technical indicators
Central frequency | 70MHz/140MHz MSD+TPC | |||
Signal level | Adjustable within -30 ~ -10 dBm | |||
Demodulation system | PCM-FM, PCM-BPSK/QPSK, PCM-CDMA-BPSK | |||
PCM | PCM code rate | 1Kbps ~ 20Mbps | ||
PCM code type | NRZ-L、M、S，BIφ-L、M、S，RNRZ-L NRZ-L, M, S, BIφ-L, M, S, RNRZ-L | |||
Telemetry frame structure | Conforming to GJB21.2A specification, and IRIG106 standard | |||
Sensitivity | FM | -129dBw, 2Mbps, Pe ≤ 1×10-4 | ||
BPSK | -151dBw, 10kbps, Pe ≤ 1×10-4 | |||
MSD+TPC | Sensitivity | MSD+TPC gain ≥ 5dB, when the TPC matrix is (64,57) × (64,57), Pe<1×10-4 | ||
MSD | MSD supports detection of 5 or more symbols. | |||
TPC | It completes encoding and decoding with a complete soft core, and supports (32,26) × (32,26), (64,57) × (64,57), (128,120) × (128,120), etc. | |||
CDMA | Data rate | 1Kbps ~ 500Kbps | Pseudo-code type | GOLD, m sequence |
Pseudo-code length | 63、127、255、511、1023、2047 63, 127, 255, 511, 1023, 2047 | Convolution code | (2,1,7), conforming to telemetry standard GJB 1549-92 | |
