Publications

Refine Results

(Filters Applied) Clear All

By

Enhanced radar data acquisition system and signal processing algorithms for the Terminal Doppler Weather Radar

October 24, 2005
  |
Conference Paper
Author:
John Y. Cho
…
Published in:
32nd Conf. on Radar Meteorology, 24-29 October 2005.
Topic:
algorithms
R&D area:
R&D group:

Summary

As part of a broader FAA program to improve supportability, the Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced. For this purpose we developed an engineering prototype RDA with a scalable, open-systems hardware platform. This paper describes the design and characteristics of this new system. The dramatically increased computing power and more flexible transmitter control also enables modern signal processing algorithms to be implemented to improve the quality of the base data. Results highlighting the improved range-overlay protection provided by the new algorithms are presented.
READ LESS

Summary

As part of a broader FAA program to improve supportability, the Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced. For this purpose we developed an engineering prototype RDA with a scalable, open-systems hardware platform. This paper describes the design and characteristics of this new system...

READ MORE
Enhanced radar data acquisition system and signal processing algorithms for the Terminal Doppler Weather Radar

Improved range-velocity ambiguity mitigation for the Terminal Doppler Weather Radar

October 4, 2004
  |
Conference Paper
Author:
John Y. Cho
…
Published in:
11th Conf. on Aviation, Range and Aerospace Meteorology, 4-8 October 2004.
Topic:
algorithms
R&D area:
R&D group:

Summary

The Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced as part of a broader FAA program to improve the supportability of the system. An engineering prototype RDA has been developed with a scalable, open-systems hardware platform. With the dramatically increased computing power and more flexible transmitter control, modern signal processing algorithms can be implemented to improve the quality of the base data. Nation-wide, the most serious data quality challenge is range-velocity (RV) ambiguity. In a previous study (Cho et al., 2003) we showed that multiple pulse repetition interval (PRI) and constant-PRI phase-code processing have complementary strengths with respect to range-fold protection, and pro-posed an adaptive waveform and processing selection scheme on a radial-by-radial basis. Here we describe the scheme and give more details about the clutter filtering and velocity dealiasing algorithms to be used on the two types of signals.
READ LESS

Summary

The Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced as part of a broader FAA program to improve the supportability of the system. An engineering prototype RDA has been developed with a scalable, open-systems hardware platform. With the dramatically increased computing power and more flexible...

READ MORE
Improved range-velocity ambiguity mitigation for the Terminal Doppler Weather Radar

Range-velocity ambiguity mitigation schemes for the enhanced Terminal Doppler Weather Radar

August 6, 2003
  |
Conference Paper
Author:
John Y. Cho
…
Published in:
37th Int. Conf. on Radar Meteorology, 6-12 August 2003.
Topic:
algorithms
R&D area:
R&D group:

Summary

The Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced as part of a broader FAA program to improve the supportability of the system. An engineering prototype RDA is under development that will provide a modern, open-systems hardware platform and standards-compliant software. The new platform also provides an opportunity to insert algorithms to improve the quality of existing base data products, as well as support future enhancements to the aviation weather services provided by TDWR. There are several outstanding data quality issues with the TDWR. In this paper, we focus on mitigation schemes for the range-velocity ambiguity problem that is especially severe for C-band weather radars such as the TDWR.
READ LESS

Summary

The Terminal Doppler Weather Radar (TDWR) radar data acquisition (RDA) subsystem is being replaced as part of a broader FAA program to improve the supportability of the system. An engineering prototype RDA is under development that will provide a modern, open-systems hardware platform and standards-compliant software. The new platform also...

READ MORE
Range-velocity ambiguity mitigation schemes for the enhanced Terminal Doppler Weather Radar
1-3 of 3