Final answer:
The noise figure of a radar receiver cannot be calculated with the information given, as it requires additional data such as output SNR or operational temperature which is not provided in the question.
Step-by-step explanation:
The student's question on how to determine the noise figure of a radar receiver with the given specification of a minimum input signal power of 10⁻¹² W falls into the domain of physics, particularly focusing on the field of telecommunications engineering. however the provided reference information does not contain the necessary details to calculate the noise figure directly.
The noise figure of a radar receiver is typically specified by the manufacturer and determines the receiver's sensitivity. It is defined as the ratio between the signal-to-noise ratio (SNR) at the input and the SNR at the output. Since the minimum input signal power is given but additional necessary data such as the actual receiver output SNR or the temperature at which the receiver operates are not provided, we cannot accurately calculate the noise figure.