DISCRIMINATOR FOR DELAY SYNCHRONIZATION OF DISCRETELY CODED B- FREQUENCY SIGNAL Russian patent published in 2004 - IPC

FIELD: radar engineering; data channels of control systems for pilotless flying vehicles. SUBSTANCE: proposed discriminator that can be used, for example, in active and semi-active homing radar heads of winged and anti-aircraft missiles and in device for synchronizing radio links of telecontrolled missiles has series-connected mixer and filter; series-connected first control component and standard-signal generator whose output is connected to first input of mixer, second input of the latter functioning as discriminator input and filter output, as discriminator output; second control component; tunable carrier generator; 90 deg. phase shifter; first, second, third, fourth, fifth, and sixth multipliers; and also series-connected adder and second filter whose output is connected to input of first control component. Output of standard-signal generator is connected to first inputs of first and fifth multipliers whose outputs are connected to first inputs of second and fourth multipliers, outputs of the latter being connected to first and second inputs of adder. Discriminator input is integrated with first inputs of third and sixth multipliers whose outputs are connected to second inputs of second and fourth multipliers, respectively. Filter output is connected through second control component to input of tunable carrier generator whose output is connected directly to second inputs of fifth and sixth multipliers and through 90 deg. phase shifter, to second inputs of first and third multipliers. EFFECT: enhanced noise immunity and precision due to eliminating discrimination characteristic in lock-on area. 1 cl, 2 dwg