Method and apparatus for implementing high fidelity Doppler phase and time effects in advanced EW stimulus systems

A method, comprising:

• determining with a computer slant range, radial velocity and radial acceleration for respective ones of a plurality of emitter and receiver pairs at a first sample rate;
• interpolating with a computer the slant range, radial velocity and radial acceleration to produce a radial velocity and a second sample rate higher than the first sample rate;
• computing with a computer a Doppler frequency based on the second radial velocity and an emitter carrier wavelength;
• computing with a computer a differential phase at a third sample rate higher than the second sample rate;
• and applying the differential phase to the carrier signal to produce an output signal;
• simulating the emitters based on the output signal.

A computer readable medium storing computer readable program code for causing a computer perform the steps of:

• receiving state vector data regarding emitter receiver pairs sampled at a first rate;
• transforming the state vector data to scalar data for each of the plurality of emitter-receiver pairs;
• converting the scalar data to a slant range and a radial velocity for the emitter-receiver pair at a second sample rate higher than the first sample rate;
• determining a Doppler frequency for each pair based on a carrier wavelength at the second sample rate;
• determining a Doppler phase based on the Doppler frequency as a differential phase at a third sample rate that is higher than the second sample rate;
• storing the Doppler frequency in a computer readable medium;
• and
• multiplying the stored Doppler frequency based on the third sample rate.

A method, run on a processor, comprising:

• receiving state vector data regarding emitter receiver pairs sampled at a first rate;
• transforming the state vector data to scalar data for each of the plurality of emitter-receiver converting the scalar data to a slant range and a radial velocity for the emitter-receiver pair at a second sample rate higher than the first sample rate;
• determining a Doppler frequency for each pair based on a carrier wavelength at the second sample rate;
• determining a Doppler phase based on the Doppler frequency as a differential phase at a third sample rate that is higher than the second sample rate;
• determining an analog based and frequency based on the Doppler phase and the emitter carrier frequency;
• and
• translating the analog based and frequency into a signal having frequency, phase and pulse time arrival characteristics replicating the Doppler effect for the emitters and receivers.