Modular optronic periscope
A modular optronic periscope includes a staring module, having a plurality of static sensors providing image data for a wide field of view at moderate resolution, and an image processor, by way of which image data from the static sensors are stitched together into a single continuous image. A multi-spectral, narrow field of view at a higher resolution than the staring module is produced using a pointing module including a rotatable mirror, and a collimated optical bundle from the pointing module is imaged by way of an optical platform onto photosensitive devices to form a two dimensional image array. Each pixel of the image array is repositioned by way of image derotation circuitry before display.
1. A modular optronic periscope, comprising:
a staring module including a plurality of static sensors providing image data for a wide field of view, each static sensor having nominal pixel resolution of at least 0.33 mRad in the visible waveband, said starting module being static while providing panoramic imaging covering 360 degrees of azimuth without moving parts;
an image processor operable to receive image data from the plurality of static sensors and to stitch together the received image data into a single continuous image;
a pointing module including a rotatable mirror providing an optical bundle for a multi-spectral narrow field of view of less than four degrees and at a resolution higher than the wide field of view provided by said staring module, said pointing module configured to function independently from said staring module;
an optical platform operable to image the optical bundle from said pointing module onto photosensitive devices to form a two dimensional image array; and
image derotation circuitry operable to reposition each pixel of said image array before display.
2. A modular optronic periscope according to claim 1 , further comprising a plurality of static sensors that detect visible light.
3. A modular optronic periscope according to claim 1 , further comprising a plurality of static sensors that detect infrared light.
4. A modular optronic periscope according to claim 1 , further comprising a low inertia rotatable mirror.
5. A modular optronic periscope according to claim 4 , wherein said low inertia rotatable mirror is inertially stabilized.
6. A modular optronic periscope according to claim 1 , wherein said optical bundle is a collimated optical bundle.
7. A modular optronic periscope according to claim 6 , wherein said collimated optical bundle is separated into smaller spectral wavebands.