What is Imaging Radar ?

by Tony Freeman, Jet Propulsion Laboratory


An imaging radar works very like a flash camera in that it provides its own light to illuminate an area on the ground and take a snapshot picture, but at radio wavelengths. A flash camera sends out a pulse of light (the flash) and records on film the light that is reflected back at it through the camera lens. Instead of a camera lens and film, a radar uses an antenna and digital computer tapes to record its images. In a radar image, one can see only the light that was reflected back towards the radar antenna.



A typical radar (RAdio Detection and Ranging) measures the strength and round-trip time of the microwave signals that are emitted by a radar antenna and reflected off a distant surface or object. The radar antenna alternately transmits and receives pulses at particular microwave wavelengths (in the range 1 cm to 1 m, which corresponds to a frequency range of about 300 MHz to 30 GHz) and polarizations (waves polarized in a single vertical or horizontal plane). For an imaging radar system, about 1500 high- power pulses per second are transmitted toward the target or imaging area, with each pulse having a pulse duration (pulse width) of typically 10-50 microseconds (us). The pulse normally covers a small band of frequencies, centered on the frequency selected for the radar. Typical bandwidths for an imaging radar are in the range 10 to 200 MHz. At the Earth's surface, the energy in the radar pulse is scattered in all directions, with some reflected back toward the antenna. Thisbackscatter returns to the radar as a weaker radar echo and is received by the antenna in a specific polarization (horizontal or vertical, not necessarily the same as the transmitted pulse). These echoes are converted to digital data and passed to a data recorder for later processing and display as an image. Given that the radar pulse travels at the speed of light, it is relatively straightforward to use the measured time for the roundtrip of a particular pulse to calculate the distance or range to the reflecting object. The chosen pulse bandwidth determines the resolution in the range (cross-track) direction. Higher bandwidth means finer resolution in this dimension.



Radar transmits a pulse Measures reflected echo (backscatter )



In the case of imaging radar, the radar moves along a flight path and the area illuminated by the radar, or footprint, is moved along the surface in a swath, building the image as it does so.

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Fisker Ocean to Debut 4D Digital-Imaging Radar—What Is It?
Imaging radar is a radar application that creates two-dimensional images of landscapes by illuminating an area with radio waves and recording the reflected light. It works similarly to a camera, but instead of using a lens and film, imaging radar uses an antenna and digital computer to record images.

Imaging radar has many uses, including:

Monitoring crops
Imaging radar can monitor crop growth, detect diseases, and assess soil moisture levels.

Flood monitoring
Imaging radar can track changes in water levels and soil moisture to monitor the situation on the ground and predict floods.

Forest health
Imaging radar can monitor forest health, track deforestation, and map wetlands.

Earthquake and landslide assessment
Imaging radar can assess the situation after an earthquake or landslide.

Search and rescue
Imaging radar can be used for search and rescue operations in remote locations.

Autonomous vehicles
Imaging radar can be used in autonomous vehicles to map the environment around the vehicle and detect hazards.

Imaging radar is superior to regular radar in several ways, including:
Vertical detection: Imaging radar can detect vertically, providing 3D information.
Precision: Imaging radar is more precise than regular radar.
Range: Imaging radar can detect objects at longer distances than regular radar.
Object length measurement: Imaging radar can measure the length of objects.

DFCO Signals & Forecast
There are few to no technical positive signals at the moment. The Dalrada Financial Corporation stock holds sell signals from both short and long-term Moving Averages giving a more negative forecast for the stock. Also, there is a general sell signal from the relation between the two signals where the long-term average is above the short-term average. On corrections up, there will be some resistance from the lines at $0.149 and $0.166. A break-up above any of these levels will issue buy signals. A sell signal was issued from a pivot top point on Monday, July 08, 2024, and so far it has fallen -28.43%. Further fall is indicated until a new bottom pivot has been found. Furthermore, there is currently a sell signal from the 3 month Moving Average Convergence Divergence (MACD). Dalrada Financial Corporation gained volume on the last day, but on falling prices. In technical terms, this is called divergence and may be an early warning. In some cases, increasing volume on falling prices may be considered positive, but that is mainly in typical "sell-offs". The very low volume increases the risk and reduces the other technical signals issued.

An au pair is a young adult who lives with a host family in another country for a set period of time and provides childcare and light housework in exchange for room, board, and a stipend.

Here are some characteristics of au pairs:

Age: Au pairs are typically between the ages of 18 and 30.

Visa: Au pairs travel on a cultural exchange visa.

Length of stay: Au pairs typically stay for one to two years, but can extend their stay for up to an additional 12 months.

Responsibilities: Au pairs help with childcare, such as playing with and supervising children, preparing meals, making school lunches, and helping with bathtime. They may also help with some light housework.

Benefits: Au pairs receive a weekly stipend, room, and board.

Cultural exchange: Au pairs become part of the host family and have the opportunity to experience and learn about American culture.

The term "au pair" comes from the French language, where it literally means "equal, even". It refers to the equal exchange of work for room and board.

New poll delivers warning signals to Harris

Harris and Trump tied in latest US election polls, as Tuesday’s debate nears
National and swing-state polling indicates a narrow race, with support for Trump remaining solid despite his change of Democratic rival

New poll shows Trump holds lead with ‘remarkably resilient’ support
Harris continues to struggle with key demographics for Democrats

Here’s What’s Keeping Democrats Up at Night Ahead of the Debate
Heading into the high-stakes debate on Tuesday, the mood in the party remains upbeat. But with polls looking tight, concerns are starting to seep in.

The latest polls added to The Washington Post’s polling averages, which include both national and state polls, are giving the first indication that Vice President Kamala Harris’s surge in public opinion has plateaued. Here’s the current margin in each swing state:

New polls show change in Harris-Trump race in Pennsylvania

The average daily volume of LWLG traded in the past 3 months is 605,237 shares per day. So it would take less than 3 days average trading volume to cover the current short interest.

Yeah, that's it. I guess the move from 15 to 7 was the same? Or the move from 7 down to the current price is the same? Must be all A.I.....

Gadolinium-based contrast agents (GBCAs) can be nephrotoxic and increase the risk of acute kidney injury (AKI) in patients with chronic kidney disease (CKD). The risk of AKI increases with lower glomerular filtration rate (GFR) and decreases with prehydration.

Older versions of GBCAs can also increase the risk of nephrogenic systemic fibrosis (NSF), a rare but serious disease that can cause multisystem organ failure and respiratory failure. NSF can lead to disability, restricted mobility, and death. However, the true mortality rate is likely unknown due to underreporting and possible misdiagnosis.

The FDA and healthcare community are aware of the effects of GBCAs on people with kidney disease, and there haven't been any new cases of NSF in over 10 years.

Yes, gadolinium-based contrast agents (GBCAs) can be a risk for chronic kidney disease (CKD):

Older GBCAs
Older GBCAs can increase the risk of nephrogenic systemic fibrosis (NSF), a rare but serious disease that can cause thickening of the skin, organs, and other tissues. The FDA has issued warnings about specific GBCAs that were responsible for most cases of NSF.

Newer GBCAs
Newer GBCAs, called group II agents, are generally safe for people with kidney disease, including those on dialysis.

Gadolinium nephrotoxicity
Gadolinium nephrotoxicity can occur in some conditions, such as kidney impairment, and can lead to subclinical kidney injury. This injury can decrease kidney reserve and may eventually manifest as CKD.

Gadolinium is a rare earth metal that is toxic, but it is bound to chelating molecules in its injectable form to block its dangerous effects. Most of these molecules are then filtered through the kidneys and eliminated.

Gadolinium-based contrast agents (GBCAs) can be nephrotoxic and increase the risk of acute kidney injury (AKI) in patients with chronic kidney disease (CKD). The risk of AKI increases with lower glomerular filtration rate (GFR) and decreases with prehydration.

Older versions of GBCAs can also increase the risk of nephrogenic systemic fibrosis (NSF), a rare but serious disease that can cause multisystem organ failure and respiratory failure. NSF can lead to disability, restricted mobility, and death. However, the true mortality rate is likely unknown due to underreporting and possible misdiagnosis.

The FDA and healthcare community are aware of the effects of GBCAs on people with kidney disease, and there haven't been any new cases of NSF in over 10 years.

Yes, gadolinium-based contrast agents (GBCAs) can be a risk for chronic kidney disease (CKD):

Older GBCAs
Older GBCAs can increase the risk of nephrogenic systemic fibrosis (NSF), a rare but serious disease that can cause thickening of the skin, organs, and other tissues. The FDA has issued warnings about specific GBCAs that were responsible for most cases of NSF.

Newer GBCAs
Newer GBCAs, called group II agents, are generally safe for people with kidney disease, including those on dialysis.

Gadolinium nephrotoxicity
Gadolinium nephrotoxicity can occur in some conditions, such as kidney impairment, and can lead to subclinical kidney injury. This injury can decrease kidney reserve and may eventually manifest as CKD.

Gadolinium is a rare earth metal that is toxic, but it is bound to chelating molecules in its injectable form to block its dangerous effects. Most of these molecules are then filtered through the kidneys and eliminated.

Solomons Song 🎼
@StacyGo93804606
I posted something a ways back on Vetinary vaxxes they give our pets, as well. We luv them so l want to explain that some Vets went up against BIG Pharma with data collected in regards to rabies vax. This Vet said: "I can't in good faith and according to my Hippocratic Oath over-vax ppls dogs anymore and kill them"! He explained quite irately that Vets must give the same dose for all size dogs! Or they are in jeopardy of loosing their license to Practice! So basically, a 30lb dog gets the same dose as a 90+ lb dog! They also don't need them every 3yrs. Lions have shown they only need one rabies vax per a Lifetime. Ofcourse we are talking different species but they wouldn't let him get to the the piles of data collected. Our dogs aren't living as long dogs did 3+ decades ago. I raise GSDs and my Alpha male made it thru major surgery. Prior he had blood work done and they said he was in good health for surgery. 4mths later his recovery was remarkable and his fur was growing back. He was 7yrs old and the Vet said it was OK to give him his 3rd rabies. A mth later he wouldn't eat and also vomited. He went downhill in 24hrs and he had no control over his quivering muscles! Absolutely terrifying to see a 115lb, fearless dog who could walk past fireworks and not flinch; crash like he did! I rushed him to the Vet and she thought he'd be OK until the phone rang at 2pm. I knew he had died and it was during lockdowns. 😮‍💨

I was so 💔. I spent hrs training him. He'd give his Life for mine and to see his lifeless eyes that watched over me sent me into darkness. They later told me he had cancer. The End_just like that! The Vet in the vid said one awful side effect of this overdosing is cancer! I won't get started on the Pet Food Industry that robs us and our dogs of nutrition. It's the same for ppl and we should end this 'Sick Care System'. It's GENOCIDE of all living creatures and especially our kids who we try to protect with our lives! While they are poisoned! ☣️
10:41 AM · Aug 27, 2024
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11.6K
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Mdk1

6 minutes ago

#199854 RE: Mdk1 #199852

You can access this link:
https://techovedas.com/tsmc-aims-for-breakthrough-in-silicon-photonics-for-ai-by-2029/