Company Filing History:
3 out of 68 
2 out of 74 
2 out of 23 
Years Active: 1999-2016
Title: Douglas J Nelson: Innovator in Frequency Estimation and Demodulation Technologies
Introduction
Douglas J Nelson is a prominent inventor based in Columbia, MD (US), known for his significant contributions to the fields of frequency estimation and signal demodulation. With a total of 11 patents to his name, Nelson has developed innovative methods that enhance the accuracy and efficiency of geolocation and data transmission technologies.
Latest Patents
Among his latest patents, one notable invention is titled "Systems and methods of frequency estimation for geolocation." This method involves computing a cross-spectral surface of a signal and determining initial frequency estimates. It further includes performing polynomial interpolation to generate an initial frequency polynomial and integrating it to create an initial phase polynomial. The process continues with generating a basebanded signal and determining unwrapped phase values, ultimately leading to the differentiation of an updated phase polynomial for accurate carrier frequency estimation.
Another significant patent is "Coherent demodulation of ais-GMSK signals in co-channel." This invention focuses on demodulating GMSK signals by estimating the carrier frequency, basebanding the signal, and tracking the carrier frequency. It employs a bank of poly-bit matched filters to detect data bursts and estimate the transmitted data sequence, showcasing Nelson's expertise in advanced signal processing techniques.
Career Highlights
Throughout his career, Douglas J Nelson has worked with esteemed organizations, including the National Security Agency (NSA) of the United States. His work at the NSA has allowed him to contribute to critical advancements in national security technologies, particularly in the realm of communication and signal processing.
Collaborations
Nelson has collaborated with notable professionals in his field, including David C Smith and Patrick John Schone. These collaborations have further enriched his work and contributed to the development of innovative solutions in frequency estimation and demodulation.
Conclusion
Douglas J Nelson's contributions to the fields of frequency estimation and signal demodulation have made a significant impact on technology. His innovative patents and collaborations reflect his dedication to advancing communication technologies.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.