Analog Modules Inc.’s patented laser spot tracker, model 742DP, has wide flexibility for missile, unmanned aircraft systems, weapons systems and platform tracker applications. The detector is temperature-controlled and optimized for 1.06 μm. Independent five-channel noise detectors set low thresholds to achieve long acquisition ranges for various background light and spot positions, and special circuits resist sunlight blinding in any or all quadrants. A range of N-type custom-designed detectors yield high performance. A separate substrate allows the detector size or type to be optimized for a particular application. The hermetically sealed temperature-controlled detector has built-in front-end electronics and is mounted on a surface-mount-technology board. A second printed circuit board contains analog and digital processing circuits.