| 摘要 |
FIELD: radio engineering. SUBSTANCE: invention can be used in wide-band communication systems. Tracking receiver has filter of automatic frequency control and voltage-controlled generator connected in series. The latter is connected to inputs of two multipliers, output of second multiplier is linked to inputs of sine and cosine multipliers of time discriminator. Clock generator is connected via shift register of code generator to filter of automatic frequency control and to multipliers of time discriminator. Channels of time discriminator are inserted with two integrators which outputs are connected to unit of modulus computation. In addition there are inserted sine and cosine channels of time discriminator each incorporating multiplier and integrator connected in series. Outputs of integrators are connected to inputs of second unit of modulus computation. Outputs of first and second units of modulus computation are connected to inputs of subtracter. The latter is connected to actuator which is apart from this connected to circuit of decision making and divider having variable division factor. Two other inputs of divider having variable division factor are linked to circuit of decision making and clock generator. Output of divider having variable division factor is connected to shift register. Second input of circuit of decision making is connected to output of voltage-controlled generator. Shift register is in addition connected to multiplier of sine and cosine channels of time discriminator. EFFECT: evaluation of value of static error, capability to compensate it, computation of instability, 2-4 db increase of noise immunity at stage of stepping into synchronism. |
