Unistatic Systems

A new unistatic design (see the bottom of Figure 5.13.2), developed by MDA Scientific, uses a single telescope that acts as both source and receiver. The IR beam traverses the area being monitored and returns to the receiver from an array of cubed mirrors, or retro-reflectors, on the opposite end of the field.

These clusters collect and refocus the beam and, unlike flat-faced mirrors, need not be precisely aligned to achieve near-perfect reflection along a light beam's original path.

This design makes the unistatic system easier to set up and reduces error during analysis.

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