What are ambiguous signals?

In a partial pooling equilibrium, an ambiguous signal tells the receiver that the world is in either one of two (or more) states. The receiver cannot exactly infer what state she is currently at upon receiving the signal because, by assumption, the same signal is sent in more than one state.

What does the ambiguity function do?

The ambiguity function of a waveform represents exactly the output of the matched filter when the specified waveform is used as the filter input. This exact representation makes the ambiguity function a popular tool for designing and analyzing waveforms.

What is ambiguity function in radar?

The radar ambiguity function is defined as the absolute value of the envelope of the output of a matched filter when the input to the filter is a Doppler-shifted version of the original signal, to which the filter was matched. Ambiguity functions are usually analyzed on a single pulse basis.

What is resolution of ambiguity?

Ambiguity resolution is used to find the value of a measurement that requires modulo sampling. This is required for pulse-Doppler radar signal processing.

What are the 4 types of ambiguity?

Phonetics, grammar, semantics, syntax, as small as punctuation and intonation can all be the cause of ambiguity. Based on this, linguists divide ambiguity into different types such as phonetic ambiguity, lexical ambiguity, syntactic ambiguity, and pragmatic ambiguity.

The Senseless Ambiguity of North American Turn Signals

What are the three main types of ambiguity?

Of the three kinds of ambiguity - lexical, constructional (structural) and derivational ambiguity. Structural ambiguity occurs when a phrase or sentence has more than one underlying structure, such as 'old men and women', 'old' can refer to only men or both men and women.

What causes range ambiguity?

In Synthetic Aperture Radar (SAR) imaging, range ambiguity is caused by the echoes of the previous and latter transmitted pulses scattered from undesired range zones [1].

What causes Doppler range ambiguity?

Range ambiguity occurs more often when a relatively high PRF is used. Range ambiguity may be used for mapping of abnormal flow beyond the range of PW or for recording of high velocities at sample volumes far from the transducer without frequency aliasing.

What is meant by phase ambiguity?

Phase ambiguity is produced by an interaction between ITD magnitude and sound frequency. (A) Phase ambiguity occurs because it is unclear whether the waveform in the right ear (grey) is delayed (ΔΦ1) or advanced (ΔΦ2) with respect to the waveform in the left ear (black).

What is an example of ambiguous?

Jake saw her duck. Duck is an example of an ambiguous word as it can mean "a bird" or "bend." The word remains ambiguous because the sentence does not provide enough context for the word duck.

What is an example for ambiguity?

Does ambiguity mean confusion?

If you say that there is ambiguity in something, you mean that it is unclear or confusing , or it can be understood in more than one way. See full definition of ambiguity.

What is ambiguity in critical thinking?

Ambiguity is when there is more than one clear meaning, and it is difficult to choose which meaning was intended. For example, Paul went to the bank is ambiguous because bank could mean a river bank or a financial institution. He was cut could mean he was cut from the team or he was cut by a sharp object.

What is ambiguity in decision making?

We define ambiguity as follows: ambiguity exists when the set of future possible outcomes is known, as is the set of actions possible to take, as are the payoffs for each action in each outcome, but the (absolute) probabilities of those outcomes are all unknowable prior to having to make the decision.

What is ambiguity in perception?

During observation of ambiguous figures our perception reverses spontaneously although the visual information stays unchanged. Research on this phenomenon so far suffered from the difficulty to determine the instant of the endogenous reversals with sufficient temporal precision.

What is range ambiguity in ultrasound?

Range-ambiguity artifacts (RAAs) are an erroneous mapping of returning echoes into a composite picture. The purpose of this review was to illustrate the mechanism of RAAs and to present the diagnostic problems caused by RAAs. RAA features differ slightly from organ to organ.

What does abnormal Doppler mean?

Abnormal blood flow patterns in fetal circulation detected by Doppler ultrasound may indicate poor fetal prognosis. It is also possible false positive Doppler ultrasound findings could encourage inappropriate early delivery.

What is maximum ambiguous range?

The maximum unambiguous range (R_max) is the longest range to which a transmitted pulse can travel out to and back again between consecutive transmitted pulses. In other words, R_max is the maximum distance radar energy can travel round trip between pulses and still produce reliable information.

How do you fix range ambiguity?

Range ambiguities are resolved at the lowest elevation angles by using additional antenna scans with relatively long pulse repetition times (PRTs). At middle elevation angles, batches of long-PRT transmitted pulses are alternated with batches of shorter PRT.

How does ambiguity affect validity?

(f) Ambiguity:

Ambiguity in statements in the test items leads to misinterpretation, differing interpretation and confusion. Sometimes it may confuse the better students more than the poorer ones resulting in the discrimination of items in a negative direction. As a consequence, the validity of the test is lowered.

What is the max range of radar?

The two types of radar use either the sky wave or surface wave and typical ranges are 100–3500 km and up to 500 km, respectively.

What are two things a person can do to resolve ambiguity?

What is ambiguous language in communication?

Linguistic ambiguity is a quality of language that makes speech or written text open to multiple interpretations. That quality makes the meaning difficult or impossible for a person or artificial intelligence (AI) program to reliably decode without some additional information.

What is a synonym for the word ambiguity?

Does ambiguity mean vague?

Ambiguity exists when a term can reasonably be interpreted in more than one way, for example, the word “bank” can refer to a financial institution or a riverside. Vagueness occurs when the boundaries of a word's meaning are not well defined, as in the word “tall”⁵.