Imaging Science Research, Inc.

HF Radar

We offer three models of HF surface wave radars as off-the-shelf products:

  1. Phased Array Radar - ISR_PA_N series model, where N specifies the number of elements in the receive array


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  2. Direction-of-Arrival - ISR_DOA_M monostatic model, which typically has 4 elements and is designed for space-limited applications where large receive arrays could not be deployed.


  3. Bistatic DOA radar - ISR_DOA_B model, which is a 2 or 3 site bistatic radar where all signal reception and processing is done at the master site, with remote sites used for transmission only. Unambiguous target tracks and vector velocities are determined at the master site, using echoes received using the master monostatic transmission and one or two bistatic signal echoes from the remote sites. Control of the remote sites is achieved using radio networking protocol and remote PC control.
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System Layout:

Radar Networks:
Each of the above models can be configured to operate as part of a multi-static network of radars, as each card has access to Universal Time on board using a GPS receiver as part of the basic system. (Both Differential GPS and WAAS capabilities are available as added options, primarily for other mobile radar applications.) Under this networked approach, each radar operates within its own time slot. Thus, a two-sited Phased Array radar would operate using alternate pulse time slots, so as to allow interleaved operation using the same radar frequency. (Planned options include using such a pair to receive each other bistatic signal echoes as well, thus mixing monostatic and bistatic operations at both sites. This is useful for target classification and current shear measure, as is described elsewhere on this web site.)

Each model also can be configured with a multi-frequency option, requiring loop receive antennas and a multi-frequency transmit antenna. We can also configure a system to your requirements as desired. We also offer a Rubidium clock option, which offers extremely low phase noise, important for high dynamic range applications, such as sea state monitoring using 2nd-order Doppler echoes or for target detection, classification and tracking.

 

 

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