The level of interference would depend on the distance between the radars (R), the antenna gain in the line connecting the Aggressor Tx and the Victim Rx (Agg_txAntGaindB + Vic_rxAntGaindB), the duration of time during which the chirps ‘cross’ and the Aggressor transmit power (P_Aggtx).

The main effect of this interference would be to raise the noise floor. The increase of the noise floor after range processing can be calculated as:

Where $\frac{affectedAdcSamp}{totalNumAdcSamp}$ is the ratio of the number of ADC samples that were affected by interference to the total number of adc samples. P_noise is the native noise floor without any interference, and is given by the following equation, where N_F is the Victim Receiver’s noise figure, and BandWidth_IF is the IF bandwidth.

P_Interference is the interference power received at the victim and is given by the following equation:

Where ? corresponds to the wavelength.

As an example, assume the following parameters:

• Aggressor power (dBm), P_Aggtx = 10 dBm
• Aggressor antenna gain, Agg_txAntGaindB = 10 dB
• Victim antenna gain, Vic_rxAntGaindB = 10 dB
• Victim Noise Figure, N_F = 14 dB
• IF Bandwidth, BandWidth_IF = 10 MHz
• Wavelength, ? = 3.9 mm
• Distance between Aggressor and Victim = 10 meters
• Number of samples affected = 10 %

Then,

• Interferer power, P_Interference = -60 dBm
• Thermal Noise power, P_noise = -90 dBm
• Increase in the noise floor, NoiseIncIndB = 20 dB

A 20 dB increase in the noise floor results in missed detections, unless the glitch is located and removed.