blind zone

blind zone

[′blīnd ‚zōn]
(communications)
Area from which echoes cannot be received; generally, an area shielded from the transmitter by some natural obstruction and therefore from which there can be no return.

blind zone

blind zone
i. In radar, it refers to the direction from which echoes cannot be received. This results from objects getting in the way of radar signals.
ii. In communications system, it is an area or direction from which signals cannot be received or to which messages cannot be transmitted. In HF (high frequency) communications, it is the arc between the transmitter and the point where the sky wave meets the ground at the first instance. In VHF (very high frequency) and UHF (ultrahigh frequency) communications, buildings or hills can create blind zones.
iii. The portions of the airport not visible from the control tower. See also blind spot.
References in periodicals archive ?
To the immediate west, 4m at 14.12g/t gold (including 2m at 27.40g/t gold) was intersected from 48m related to a potential blind zone of gold mineralisation that was undetected in the earlier auger geochemical drilling.
The Blind Spot Detection (BSD) system is when the speed is within the range of 30-135km/h, the system scans the rear blind zone of 3m*3m with a 58 kHz ultrasonic radar and warns the driver and the radar is set to ignore static objects and objects captured for less than one second when overtaking to minimize invalid alarms.
Both models can now be equipped with Side Assist blind zone monitoring system, which replaced the Blind Spot Detect.
Adding to its superior safety, the Encore GX is also available with pedestrian detection (PD), collision mitigation braking (CMB), lane keep assist (LKA), Side Blind Zone Alert (SBZA), Rear Cross Traffic Alert (RCTA), Lane Change Alert (LCA) and 18-inch Continental tires.
Safety features available on LT, RS and Premier trims include Lane Change Alert with Side Blind Zone Alert, rear Cross Traffic Alert, and Rear Park Assist to seamlessly aid the driver and help to keep passengers safe.
The vehicle also comes with a number of advanced safety technologies including front pedestrian braking, low speed forward automatic breaking, distance indicator and Lane Change Alert with Side Blind Zone Alert, insuring the highest safety levels for the vehicle's occupants.
Safety features are the StabiliTrak System, anti-lock braking system (ABS), electronic brakeforce distribution (EBD), Lane Change Alert, Side Blind Zone Alert, Rear Cross Traffic Alert, Tire Pressure Monitoring System (TPMS), engine immobilizer, rear parking sensors, and a built-in reverse camera.
PRECO's customers continue to see up to an 85 percent reduction in blind zone incidents after installing PreView radar systems.
Additional safety features include a Side Blind Zone alert and rear cross traffic alert systems as well as visible and audible warnings.
Referring to criticism that the JSA battalions' response to the incident was sluggish, Song said, "Some claimed 16 minutes was too long, but commanders deployed troops during that time and used a thermal observation device to locate the defector who was in a blind zone. They took the proper action."
We are sure that in such times you would wish for a feature like the new Side Blind Zone Alert that the Equinox comes equipped with.
Amongst them are Side Blind Zone Alert with Reverse Traffic Alert, Automatic Park Assist, Front and Rear Park Assist, Reversing Camera and Passive Entry/Push Button Start.