A system (600, 650, 700) for rotationally biasing a fiber optic gyroscope, the system comprising: a fiber optic gyroscope assembly comprising: a light source configured to emit an optical signal; at least one optical coupler in optical communication with the light source; at least one fiber optic coil in optical communication with the light source, the fiber optic coil configured to receive the optical signal through the optical coupler and impart a phase shift proportional to rotation; and at least one rate sensing detector in optical communication with the fiber optic coil and configured to receive the optical signal from the fiber optic coil through the optical coupler; a motor operatively coupled to the fiber optic coil and configured to apply a periodic rotation to the fiber optic coil to impart a biasing phase modulation to the optical signal; a platform operatively coupled to the motor, wherein at least a portion of the fiber optic gyroscope assembly that includes the fiber optic coil is mounted on the platform, and wherein the motor is configured apply the periodic rotation via the platform; an angle sensor mounted on the platform, the angle sensor configured to measure a local angle of the platform with respect to a surface on which the platform is mounted; and a signal processing unit (620, 660, 720) operatively coupled to the fiber optic gyroscope assembly and the motor, the signal processing unit comprising: a dither drive generator (630, 664, 730); a drive amplifier (632, 666, 734) configured to receive a dither drive signal from the dither drive generator, the drive amplifier operatively coupled to a dither actuator on the motor; a trans-impedance amplifier (634, 668, 735) configured to receive an electrical rate signal from the rate sensing detector; an angle amplifier (642, 669, 742) configured to receive a dither angle signal from the angle sensor and to generate an amplified dither angle signal; and a rate signal demodulation unit (638, 670, 738) configured to receive an amplified rate signal from the trans-impedance amplifier and output a rate signal demodulated via the amplified dither angle signal. a fiber optic gyroscope assembly comprising: a light source configured to emit an optical signal; at least one optical coupler in optical communication with the light source; at least one fiber optic coil in optical communication with the light source, the fiber optic coil configured to receive the optical signal through the optical coupler and impart a phase shift proportional to rotation; and at least one rate sensing detector in optical communication with the fiber optic coil and configured to receive the optical signal from the fiber optic coil through the optical coupler; a light source configured to emit an optical signal; at least one optical coupler in optical communication with the light source; at least one fiber optic coil in optical communication with the light source, the fiber optic coil configured to receive the optical signal through the optical coupler and impart a phase shift proportional to rotation; and at least one rate sensing detector in optical communication with the fiber optic coil and configured to receive the optical signal from the fiber optic coil through the optical coupler; a motor operatively coupled to the fiber optic coil and configured to apply a periodic rotation to the fiber optic coil to impart a biasing phase modulation to the optical signal; a platform operatively coupled to the motor, wherein at least a portion of the fiber optic gyroscope assembly that includes the fiber optic coil is mounted on the platform, and wherein the motor is configured apply the periodic rotation via the platform; an angle sensor mounted on the platform, the angle sensor configured to measure a local angle of the platform with respect to a surface on which the platform is mounted; and a signal processing unit (620, 660, 720) operatively coupled to the fiber optic gyroscope assembly and the motor, the signal processing unit comprising: a dither drive generator (630, 664, 730); a drive amplifier (632, 666, 734) configured to receive a dither drive signal from the dither drive generator, the drive amplifier operatively coupled to a dither actuator on the motor; a trans-impedance amplifier (634, 668, 735) configured to receive an electrical rate signal from the rate sensing detector; an angle amplifier (642, 669, 742) configured to receive a dither angle signal from the angle sensor and to generate an amplified dither angle signal; and a rate signal demodulation unit (638, 670, 738) configured to receive an amplified rate signal from the trans-impedance amplifier and output a rate signal demodulated via the amplified dither angle signal. a drive amplifier (632, 666, 734) configured to receive a dither drive signal from the dither drive generator, the drive amplifier operatively coupled to a dither actuator on the motor; a trans-impedance amplifier (634, 668, 735) configured to receive an electrical rate signal from the rate sensing detector; an angle amplifier (642, 669, 742) configured to receive a dither angle signal from the angle sensor and to generate an amplified dither angle signal; and a rate signal demodulation unit (638, 670, 738) configured to receive an amplified rate signal from the trans-impedance amplifier and output a rate signal demodulated via the amplified dither angle signal.