Wednesday, December 22, 2010

The AN/SPS-67 is a solid-state, surface-search/navigation radar used by the US Navy. It is a two-dimensional, G-band radar which provides highly accurate surface and limited low-flyer detection and tracking capabilities. With a range of 104 km (56.2 nmi), the AN/SPS-67 operates in the 5450 to 5825 MHz range. It utilizes a coaxial magnetron as the transmitter output tube. The transmitter/receiver is capable of operation in several pulse width settings: a long (1.0 µsec), medium (0.25 µsec), or short (0.10 µsec) pulse mode to enhance radar performance for specific operational or tactical situations. The AN/SPS-67 was developed as a replacement for the AN/SPS-10 radar, using a more reliable antenna and incorporating standard electronic module technology for simpler repair and maintenance.

The AN/SPS-67 performs very well in rain and sea clutter, and is useful in harbor navigation, since the AN/SPS-67 is capable of detecting buoys and small obstructions without difficulty. The AN/SPS-67(V) has two other configurations, the (V)2 and (V)3. The AN/SPS-67(V)2 is identical to the AN/SPS-67(V)1 with exception of the antenna. This variant uses a standard surface search antenna. The AN/SPS-67(V)3 is ehanced from previous configurations. This radar has a signal processing unit that provides digital moving target indicator (DMTI) capability. The function of the DMTI circuitry is to automatically cancel unwanted fixed echoes (sea clutter, clouds, rain, etc.) and display only moving target signals.