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Last Modified 12.19.03
Email: Kevin Manross

NOTE: To view some of these examples, you will need Java2D installed on your computer. You can obtain Java2D (by Sun Microsystems) here!


Released VCP Explorer v1.3.2 in late April/early May. Now we are working on version 2.x.


Here is a better comparison of terrain blockage between the VCPRPE and WDSSII.

Preliminary Install Instructions can be found here.


Busy week here. Beta release on Monday.


Sorry for the late update. I've been trying to knock out several of the "smaller" tasks before I tackle the Terrain Blockage. So what's new?

Up next is the terrain blockage and several small issues, such as color bars, and changing the mouse behavior.


Have successfully created an "example version" of Height Underestimate (Brown, et al. 2000 - WAF). This example has a bottom elevation angle of 0.5 degrees and a top elevation angle of 1.45 degrees. The color scheme is different than that found in the paper, however I am comparing my output to the raw output used in the Brown, et al. article.

You can view the example here.


Was on vacation for a week and battling the flu the following week.

This week, I cleaned up some code and got the beam path, beam width, beam fill and beam labels working with each other. I consolidated each of the above to update whenever there are changes in the beam elevation, width, or VCP.

Have begun work on a new Terrain Blockage scheme, used by Lak here at NSSL, which will hopefully provide much greater efficiency in calculating AP.

Sat down with Bim Wood (NSSL) to determine how to calculate the "height underestimate" values/figures used in their Brown, et al. 2000 - WAF) work.


New screen shots!

Please note that the following examples pertain only to the RHI display thus far. I.e. only a 2D beam "width". I am working on creating the 3D beam width which will be used to calculate terrain intersections.


Nothing major to show. I've been working on creating an ellipse in VisAD to represent the cross section of the radar beam. Additionally, I have been working with different beam path calculation classes. The combination of these two will (hopefully) result in the ability to create a 3D elliptical cone which will provide a more accurate way to calculate terrain beam blockage.

This 3D cone will have user adaptable parameters such as user-defined beam width and actual or effective beam width. Screen shots will hopefully be added by the end of the week.

If I get the time this week, I also hope to provide a scaled down version of the VCPRPE as a self executable jar file. If I can get to this, the following will be needed to be installed in order to view/run the program: I will provide brief instructions as well as links to these files if you are feeling ambitious and want to try out the VCPRPE.


Again, another long stretch between updates - again, I apologie. ;-)

"AP" - Anomalous Propogation
Sorry for taking so long to update! I've been busy, though. Here are some of the things I have been working on:

I got the RayPath (standard atmosphere) to plot. Check out the images here (0.5 deg) and here (3.4 deg)

Example of the VCPRPE "VCP Controller". This is a Java Applet and you will need Java2D installed on your computer to view it.
Click here!

Below is a conceptualized example of the proposed VCP Ray Path Explorer.

Conceptual Example