Spectrum Distortion Due to Frequency Instabilities in a Two-Way Coherent Doppler Radar |
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Authors: | Rauch S |
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Institution: | Canadian Marconi Co., Montreal, Quebec, Canada; |
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Abstract: | The power spectral density of the intermediate frequency signal in a coherent Doppler navigation radar is derived. The effects of antenna parameters, periodic frequency instabilities, signal two-way transit time, and transmitter frequency modulation noise are considered Several examples based on the measured frequency modulation noise of a solid-state source transmitter are presented. The results indicate the degree of loss in signal-to-noise ratio, and spectrum broadening due to an increase in signal transit time and/or frequency modulation noise. |
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