AN/TPQ-11
Description of the radar set, tactical-technical characteristics
Figure 1: AN/TPQ-11
| Specifications | |
|---|---|
| frequency: | 34.5 … 35.2 GHz
(Ka-band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 1 000 Hz |
| pulsewidth (τ): | 0.5 µs |
| receiving time: | |
| dead time: | |
| peak power: | 80 … 120 kW |
| average power: | |
| instrumented range: | |
| range resolution: | |
| accuracy: | |
| beamwidth: | |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
AN/TPQ-11
AN/TPQ-11 was operating in Ka-band weather radar for cloud detecting. AN/TPQ-11 continuously detects and records the height and density profiles of clouds and precipitation directly above the radar. The TPQ-11 was capable of detecting clouds at altitudes between 500 and 60,000 feet.
The transmitting antenna is a 7-foot parabolic reflector that is fed by a rectangular horn and waveguide. A radiation shield, made of microwave-absorbent material, is attached to the outer rim of the transmitting antenna to absorb side-lobe energy. The radar set has a separate receiving antenna. The Transmitter used a magnetron. The radar showed the data on a modified A-scope and on a permanent paper recording.