HELICOPTER RADIO-ELECTRONIC COMPLEX Russian patent published in 2011 - IPC H04K1/00 G01S13/34 

FIELD: radio engineering.

SUBSTANCE: helicopter radio-electronic complex includes check point and aircraft equipment of helicopter that consists in series connected antenna device (1,) receiver (2), analyser (4) of received signal parametres, storage and received information processing device (5), the second input of which is connected to receiver output (2) through direction-finding device (3), and telemetering device (6). Receiver (2) includes first receiving antenna (7), first mixer (12), heterodyne oscillators (11 and 23), amplifier (17) of first intermediate frequency, reformation unit (10), delay line (21), detector (20), key (22), second mixer (24) and amplifier (25) of the second intermediate frequency. Direction-finding device (3) includes mixers (13 and 14), engine (15), frequency generator (16), amplifier (18 and 19) of first intermediate frequency, multipliers (26, 27 and 30), narrow-band filters (28, 29 and 32), delay line (31), phase detector (33), phase metre (34 and 35). Antenna device (1) includes receiving antennae (7, 8, 9), transmitting-receiving antenna (44) of telemetering device. Note that receiving antenna (7) of receiver (2) and transmitting-receiving antenna (44) of telemetering device (6) are located above helicopter rotor head, receiving antennae (8 and 9) of direction-finding device (3) are located at the ends of helicopter rotor blades. Telemetering device (6) includes first driving generator (36), analogue message former (37), first analogue scrambling device (38), first amplitude modulator (39), discrete messages forming device (40), first digital scrambling device (41), first phase manipulator (42), power amplifiers (43 and 62), forth (58) and fifth (63) heterodyne oscillators, sixth (59) and seventh (64) mixers, amplifier (60) of third intermediate frequency, first duplexor (61), second amplifier (65) of forth intermediate frequency, second amplitude limiter (66), second synchronous detector (67), second analogue scrambling device (68), second band-pass filter (70), third phase detector (71) and digital scrambling device (72). Check point includes second transmitting-receiving antenna (45), high frequency amplifiers (46 and 83), third heterodyne oscillator (47), fifth mixer (48), first amplifier (49) of forth intermediate frequency, first amplitude limiter (50), first synchronous detector (51), first analogue descrambling device (52), registration and analysis unit (53), forth multiplier (54), first band-pass filter (55), second phase detector (56), first digital descrambling device (57), analogue messages source (73), second analogue scrambling device (74), second driving generator (75), second amplitude modulator (76), discrete message source (77), second digital scrambling device (78), second phase manipulator (79), sixth heterodyne oscillator (80), eighth mixer (81), amplifier (82) of intermediate frequency, second duplexor (84).

EFFECT: increase of efficiency and coverage range of electronic reconnaissance station by using geosynchronous retranslator of artificial satellite, duplex radio communication between helicopter and check point, also building of telemetering device according to superheterodyne circuit.

5 dwg