Figure 6 - uploaded by Hugh Roarty
Content may be subject to copyright.
The coverage of the current radar sites in NY Harbor. This is a monostatic configuration with SILD and PORT. The resiliency of this configuration is low.
Source publication
Increasing the resiliency of High Frequency radar measurements has been a priority within the community for the past several years. One method to increase resiliency is through the use of a bistatic radar configuration, which is unique to the SeaSonde HF radar. This is achieved by separating the transmit and receive stations and then linking them t...
Contexts in source publication
Context 1
... New York Harbor there are 2 sites, each 25MHz ( Figure 6). One station is located in Port Monmouth, NJ (PORT) and the other is located in Great Kills, NY (SILD). ...
Similar publications
HF radars are becoming important components of coastal operational monitoring systems particularly for currents and mostly using monostatic radar systems where the transmit and receive antennas are colocated. A bistatic configuration, where the transmit antenna is separated from the receive antennas, offers some advantages and has been used for cur...
Compensation for platform motion in Doppler spectra acquired by HF-radar.
High-frequency (HF) surface-wave (SW) radar systems have demonstrated their capability to capture the signals from seismic and non-seismic tsunami events using the estimation of surface current changes. Several ocean radar systems, operating in the upper HF band, were already optimized for tsunami alerting and installed for real-time tsunami monito...
Accepted to IEEE Journal of Oceanic Engineering
Citations
A novel dual-frequency compact antenna system designed for high-frequency (HF) radar is proposed and fabricated. The dual-frequency antenna system is composed of three sensing elements, a monopole and two crossed-loop antennas. A concise switch module based on symmetric PIN diodes is applied to the antenna for dual-frequency operation. This designed antenna can achieve equivalent performance of corresponding single-frequency antenna at each frequency. The dual-frequency response characteristics, as well as results of measured antenna patterns and experimental sea echo spectra, are given to prove the validity of the antenna system design.
A paper was presented at OCEANS '15 on a new way of increasing the resiliency of a High Frequency radar network through the use of bistatic measurements. This was modeled on the Mid Atlantic Regional Association Coastal Ocean Observing System (MARACOOS) High Frequency Radar network. The bistatic operating system is a recent feature of the SeaSonde HF radar. The bistatic capability is a viable way of increasing resiliency with out increasing the number of antennae. It involves the separation of the transmit and receive stations, as well as GPS timing to coordinate the time of the transmission signals. This results in a switch from a radial geometry and measurement to an elliptical geometry and measurement. This allows for higher percentage of overlapping coverage, which could potentially increase accuracy and resiliency. Using the configuration found through the previous models, bistatics were implemented along the MARACOOS network. Currently three radar stations are operating bistataically and generating elliptical current maps. They are stations located in North Wildwood (WOOD), Strathmere (RATH), and Brigantine (BRMR) New Jersey. The results have shown promise that the elliptical current measurements can become part of the operational data stream for the radar network. The bistatic systems are renamed using the first two letters of the four-letter station codes. For example the Strathmere-Brigantine bistatic system is called RABR. Initial findings suggest that the RABR is getting better coverage than the RAWO station. Using bistatics in RABR has widened the coverage area. Accuracy and coverage will be closely monitored during this time.
