What does QuickBird satellite do?
Using a state-of-the-art BGIS 2000 sensor (PDF), QuickBird satellite collected image data to 0.65m pixel resolution degree of detail. This satellite was an excellent source of environmental data useful for analyses of changes in land usage, agriculture, and forest climates.
What is the spatial resolution of QuickBird satellite?
QuickBird images are multi-spectral image data covering a spectral range from 450 to 900 nm. As very high-resolution satellite imagery, its ground-level pixel size is approximately 2.4 × 2.8 m. The RapidEye data set has five spectral bands ranging from 400 to 850 nm. Its spatial resolution was 5 × 5 m.
Which sensor is used in satellite?
IRS Sensors
| Sensor | Wavelength (µm) | Spatial Resolution (m) |
|---|---|---|
| Red | 0.62 – 0.68 | 23 |
| Near IR | 0.77 – 0.86 | 23 |
| Shortwave IR | 1.55 – 1.70 | 70 |
| WiFS |
What is the sensor of Ikonos?
The IKONOS satellite sensor is a high-resolution satellite operated by MAXAR Technologies Inc. Its capabilities include capturing a 3.2m multispectral, Near-Infrared (NIR) 0.80-meter panchromatic resolution at nadir.
What is QuickBird sensor?
QuickBird was a high-resolution commercial Earth observation satellite, owned by DigitalGlobe, launched in 2001 and reentered after orbit decay in 2015. QuickBird used Ball Aerospace’s Global Imaging System 2000 (BGIS 2000).
What type of satellite is QuickBird?
commercial satellite
QuickBird-2 DATA
QuickBird-2 was an Earth-imaging satellite of DigitalGlobe Inc. When launched in 2001, it was then the highest resolution commercial satellite.
Is QuickBird active or passive?
Quickbird, WorldView, Landsat and MODIS are all passive sensors that measure only radiation emitted by the Sun and reflected or emitted by the Earth.
What is RTD temperature sensor?
An RTD (Resistance Temperature Detector) is a sensor whose resistance changes as its temperature changes. The resistance increases as the temperature of the sensor increases. The resistance vs temperature relationship is well known and is repeatable over time.
How do satellite sensors collect data?
Satellites use remote sensing to collect information digitally. The images are composed of thousands of pixels that the satellite scanned into rows and columns. The satellite gathers a group of rows into a computer file. People use computers to convert this information to images.
Who owns Quickbird?
DigitalGlobe
Quickbird 1, 2 (QB 1, 2)
| Nation: | USA |
|---|---|
| Operator: | Earthwatch Inc. → DigitalGlobe |
| Contractors: | Ball Aerospace |
| Equipment: | BGIS 2000 (Ball Global Imaging System 2000) |
| Configuration: | BCP-2000 |
How many sensors are there in IKONOS-2?
IKONOS-2 Instruments
The detectors at the focal plane included a panchromatic sensor with 13,500 pixels cross-track, and four multispectral sensors (blue, green, red, and near-infrared) each with 3,375 pixels along-track.
Is QuickBird a satellite?
QuickBird was a high-resolution commercial Earth observation satellite, owned by DigitalGlobe, launched in 2001 and reentered after orbit decay in 2015.
What is difference between Pt100 and RTD?
There is no difference a PT100 is a version of a RTD (resistance temperature detector). What is an RTD? A resistance temperature detector, also known as an RTD or resistance thermometer, is a type of temperature sensor.
Why is RTD called Pt100?
RTD sensors made of platinum are called PRT, “Platinum Resistance Thermometer.” The most common PRT sensor used in the process industry is the Pt100 sensor. The number “100” in the name indicates that is has a resistance of 100 ohms at 0°C (32°F) temperature.
What can satellites detect?
Satellite sensors can detect light that we can’t see. The electromagnetic energy reflects off the Earth’s surface and up to the satellite sensor, which collects and records information about that energy. That information is transmitted to a receiving station in the form of data that are processed into an image.
What data can satellites collect?
Polar-orbiting satellites collect data for weather, climate, and environmental monitoring applications including precipitation, sea surface temperatures, atmospheric temperature and humidity, sea ice extent, forest fires, volcanic eruptions, global vegetation analysis, as well as search and rescue.
How many QuickBird satellites are there?
In the end, two QuickBird satellites, QuickBird I and II, made it to launch pad. However, only QuickBird II made it successfully into orbit (QuickBird I suffered launch failure).
…
QuickBird 2.
| Orbital elements | |
|---|---|
| Orbital period | 93.8 minutes |
| Instruments | |
| Visible cameras | 61 cm panchromatic 2.4 meter multispectral |
What type of satellite is IKONOS?
commercial Earth observation satellite
IKONOS was a commercial Earth observation satellite, and was the first to collect publicly available high-resolution imagery at 1- and 4-meter resolution.
What is RTD working principle?
An RTD works by using a basic principle; as the temperature of a metal increases, so does the resistance to the flow of electricity. An electrical current is passed through the sensor, the resistance element is used to measure the resistance of the current being passed through it.
Is RTD active or passive?
An RTD is a passive device. It does not produce an output on its own. External electronic devices are used to measure the resistance of the sensor by passing a small electrical current through the sensor to generate a voltage.
Why does Pt100 have 3 wires?
Pt100 Temperature Sensor Wiring Diagram
The addition of a third wire, connected to one side of the measuring element, helps to compensate for the lead resistance. It is very important that each of the three wires used in the measuring circuit are equal in terms of both conductor size and length.
Why does a RTD have 3 wires?
third wire provides a method for removing the average lead wire resistance from the sensor measurement. When long distances exist between the sensor and measurement/control instrument, significant savings can be made in using a three- wire cable instead of a four-wire cable.
Can satellites see your face?
And this is a civilian craft. With some US government restrictions relaxed, commercial imaging satellites like the ones Google uses will now be able to show images at 25 centimeters of resolution. That’s the ability to see your face—from space. The latest spy satellites are even more powerful.
Can satellites see inside your house?
NOAA satellites have the capability to provide astounding views of the Earth. But many people want to know if these satellites can see their house, or even through their roofs and walls to the people inside. The answer is: no.
What can satellites see?
A few non-military satellites can see objects down to about half the size of a car. Some military satellites can still see even smaller things. But that does not tell us the whole story. For most applications we need to see larger areas, which requires other satellites that observe at a different scale.