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I would like to sample the signal Xa(t) =1+cos(10 *pi*t) using sampling frequency fs=8 Hz. How can I calculate this?
ANSWER:
Your signal has a frequency component of 5hz (from the equation: 2*pi*f*t = 10*pi*t, therefore f=5). The Nyquist rate for this signal (the minimum sampling rate required to reconstruct the signal) is then 10Hz, and even at that rate the amplitude of the sampled signal will be reduced unless you can somehow synchronize the sampling with the peaks/troughs of the cosine signal.
If you sample at 8Hz you will not be able to reconstruct the signal at all.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoSampling techniques are unavoidable today in science, technology, trading, quality control, etc.
Wiki User
∙ 10y agoSampling techniques in researching involves to types of sampling. The probability sampling and the non-probability sampling. Simple random is an example of probability sampling.
Wiki User
∙ 10y agotargeted samping
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Definition of sampling method in research methodology?
sampling is a process of getting information about a population by asking questions from a potion of people who belong with that population
What is the significance of sampling in research and what are the characteristics of a good sample?
Sampling is important as data collected is used to test the hypothesis. A good sample is a true representation of the general population. In addition, it should be flexible and focus on the research objectives.
What type of research methodology did Alfred Kinsey use for his study of sexuality?
random sampling and select
What is differences between convenience and incidental sampling?
The difference between convenience and incidental sampling is that convenience sampling chooses the easiest people to reach when a sampling is done, whereas incidental sampling is done at random.
What is the difference between random sampling and non random sampling?
a
why do you use sampling design in research studies?
To avoid mistakes and correct
What the methods being used in conducting a research?
Some common methods used in conducting research include surveys, experiments, interviews, case studies, and observations. These methods allow researchers to collect data, analyze it, and draw conclusions based on the findings. Researchers often choose the method that best aligns with their research questions and objectives.
Sampling in operations research and management?
semi stratified sampling
What is sampling in research?
Sampling techniques in researching involves to types of sampling. The probability sampling and the non-probability sampling. Simple random is an example of probability sampling.
Why business might use quota sampling in market research?
Businesses may use quota sampling in market research to ensure that the sample represents important subgroups within the target population. This method allows for easier identification and recruitment of participants from specific demographic groups, making it more cost-effective and efficient. Quota sampling can help provide more accurate and reliable data for making informed marketing decisions.
Why is random sampling so important for research?
sampling is very important for researcher
When a research problem is related to heterogenous population the most suitable sampling method is?
cluster sampling
Who is the author of total enumeration sampling design?
Total Enumeration Sampling Design is a method used in research and typically doesn't have one specific author. It is a technique that involves studying and analyzing an entire population rather than a sample. It is commonly used in fields such as epidemiology and census studies.
Can non -probability sampling be used in descriptive research?
Yes.
What are the reasons for choosing random sampling method for ones research work and what is random sampling method anyway?
because it is the simplest sampling technique which requires less time and cost.
What is sampling precision?
it implies the degree to which the strate choosen for research is apt
What is primary sampling?
Primary sampling is a research method used by various companies for many different reasons. The primary sampling unit arises in sampling surveys where population elements are grouped, and those groups becomes units in the sample selection.
