GPS signals are already very weak when they arrive at the Earth’s surface. The GPS satellites have transmitters that only deliver 27 W from a distance of 20,200 km in orbit above the Earth. By the time the signals arrive at the user's receiver, they are typically as weak as −160 dBW, equivalent to one tenth of a millionth billionth of a watt. This is well below the thermal noise level in its bandwidth. Outdoors, GPS signals are typically around the −155 dBW level.
Gps Navigation Detector
Model No.:CTO25042
Description: High stability, high accuracy and low misinformation; Super storage, 200,000 groups built-in coordinates; All-weather 24 hours design and position correctly; GPS frequency:1575.42MHz ±1...
High-sensitive GPS receiver
Model No.:CTO21922
Description: DESRIPTION ◆ CPU Samsung 2440 400MHZ ◆ Video 4.0” Tranmissive LCD, anti-glare, 320x240,65k colors ◆ Memory 32MB NAND flash on board,64MB SDRAM ◆ GPS Module Built-in GPS module...
High-sensitive GPS receiver
Model No.:CTO21923
Description: DESRIPTION ◆ CPU Samsung 2440 400MHZ ◆ Video 3.5” Tranmissive LCD, anti-glare, 320x240,65k colors ◆ Memory 32MB NAND flash on board,64MB SDRAM ◆ GPS Module Built-in GPS module...
High-sensitive GPS receiver
Model No.:CTO21921
Description: DESRIPTION ◆ CPU Samsung 2440 400MHZ ◆ Video 3.5” Tranmissive LCD, anti-glare, 320x240,65k colors ◆ Memory 32MB NAND flash on board,64MB SDRAM ◆ GPS Module Built-in GPS modu...
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