{'fraction_non_alphanumeric': 0.020247469066366704, 'fraction_numerical': 0.006749156355455568, 'mean_word_length': 5.793893129770993, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A Study of Front End Architectures for the PolarRad 0.5-2 GHZ Microwave Radiometer

Wideband radiometers must contend with a challenging RFI environment and with frequency-dependent reflections between receiver components caused by impedance mismatches. Channelizing the bandwidth prior to amplification can prevent strong interference in one portion of bandwidth from corrupting all of the data and can allow for the incorporation of isolators to reduce reflection effects, but the additional components required cause additional losses, reducing the sensitivity of the radiometer. Avoiding channelization in the radiometer front end reduces these losses, but increases the potential impact of reflections and high amplitude RFI sources. This paper investigates tradeoffs between “channel-ized” and “non-channelized” architectures for the proposed PolarRad 0.5-2 GHz microwave radiometer.