Slipspace radar

Slipspace radar is a UNSC-developed ship-based space sensor system that allows faster-than-light detection of objects at distances when the speed of light delay would otherwise cause an inaccaurate reading.

Principles
The mechanism of a standard Slipspace radar set is to open a rift into Slipspace using stationary particle accelerators, in a similar manner to the Slipspace COM Launcher, to create a micro-black hole, which under normal circumstances, should evaporate in a fraction of a second because of Hawking Radiation. However, microscopic amounts of negative mass projected by the scanning ship are used to hold the black hole open, and so tunnel into Slipspace in the same manner as starship Shaw-Fujikawa engines. Next, an intense radar ping is sent through the rift, which the Slipspace gravity silhouette of an object distorts somewhat, which can be detected by the sending ship's gravimetric sensors nearly instantaneously at any range below twenty million kilometres. Unlike conventional radars, slipspace radar can only scan in one direction at a time, and so most UNSC ships carry at least six sets for scanning every possible approach vector.

History
Slipspace radar was developed as a natural outgrowth of the Slipstream Packet Generator, after UNSC Navy technicians observed that the radio pings used to alert recieving ships to incoming Slipstream Packets were distorted somewhat by the ship's Slipspace gravity silhouette, which could be detected by the sending ship's gravimetric sensors. As a result, UNSC military scientists worked to develop a practical sensor system from this fortunate accident. The first models were put into use in 2554, with every Slipspace-capable vessel in the UNSC Navy equipped with at least one set by 2559.