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merc4ulfate · 01-10-14, 10:31 PM

"I have used radar, sonar, MAD gear, and FLIR"

Then I supposed the above link to the Navy Manual was required reading for you.

While there was SD radar in 1941 it's 6 mile range was barely enough time for a boat to dive. It wasn't until December of 1941 that the SJ prototype was even developed. It wasn't until early in '43 that SJ finally was on all boats.

It wasn't until after May of 1941 that Ernest Pollard used shipboard SG radar units and the gyro mount was for fixed position antennae on land and surface ships only. The AN/APS-2 was used on surface ships and Navy Blimps.

Because of the movement of the operating vessel and subsequent antennae, especially low riding submarines, the Navy developed Lobe Switching to better determine the accuracy of the contacts. There were no gyro mounts on submarines. Even a storm cloud, lightning and St. Elmos's Fire could affect radar signals. If you do not think pitch and roll affected radar signals on fixed antennae then I guess the Navy was being redundant in coming up with lobe switching, main, minor and back lobes instructions for radar oporators.

01-10-14, 10:31 PM	#10
merc4ulfate DILLIGAF Join Date: Feb 2007 Location: florida Posts: 2,058 Downloads: 210 Uploads: 0	"I have used radar, sonar, MAD gear, and FLIR" Then I supposed the above link to the Navy Manual was required reading for you. While there was SD radar in 1941 it's 6 mile range was barely enough time for a boat to dive. It wasn't until December of 1941 that the SJ prototype was even developed. It wasn't until early in '43 that SJ finally was on all boats. It wasn't until after May of 1941 that Ernest Pollard used shipboard SG radar units and the gyro mount was for fixed position antennae on land and surface ships only. The AN/APS-2 was used on surface ships and Navy Blimps. Because of the movement of the operating vessel and subsequent antennae, especially low riding submarines, the Navy developed Lobe Switching to better determine the accuracy of the contacts. There were no gyro mounts on submarines. Even a storm cloud, lightning and St. Elmos's Fire could affect radar signals. If you do not think pitch and roll affected radar signals on fixed antennae then I guess the Navy was being redundant in coming up with lobe switching, main, minor and back lobes instructions for radar oporators. __________________ Self-education is, I firmly believe, the only kind of education there is. ~Isaac Asimov~ Mercfulfate 将補日本帝國海軍 Last edited by merc4ulfate; 01-10-14 at 11:56 PM.