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Get ECM: SSJ & SOJ old version APK for Android
Use the Electronic Countermeasures (ECM) app to find SSJ & SOJ values in dB
Note: this app is probably too large for phones but OK for tablets and PCs. For a tracking radar, enter the power in kW antenna gain in dB, and IF bandwidth in MHz. Then enter the aircraft cross sectional area in m^2 and the range in km, for a self-screening jammer on board with transmitter power in kW over a bandwidth in MHz and given antenna gain in dB at a distance from the radar in km These values are for the J/S (SSJ) in dB,
Next, for the same jammer in a stand-off scenario and a sidelobe in dB level for the radar antenna, enter Rj and SL values to find J/S (SOJ).
For example, Enter Pt = 100, Gr = 35, Br = 1, A = 4, R = 3, Pj = 1, Bj = 20, Gj = 10, Rj = 10, & SL = 20. Your values for J/S (SSJ) and J/S (SOJ) should be 16.5 & -14.0 dB, respectively.
Last updated on Sep 12, 2016
Minor bug fixes and improvements. Install or update to the newest version to check it out!
Uploaded by
Shoon Lai Yupar
Requires Android
Android 2.2+
Category
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ECM: SSJ & SOJ
1.0 by Randle C. Sink
Sep 12, 2016