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High PRF is limited to systems that require close-in performance, like proximity fuses and law enforcement radar. For example, if 30 samples are taken during the quiescent phase between transmit pulses using a 30 kHz PRF, then true range can be determined to a maximum of 150 km using 1 microsecond samples (30 x C / 30,000 km/s).
High frequency data are primarily used in financial research and stock market analysis. Whenever a trade, quote, or electronic order is processed, the relating data are collected and entered in a time-series format. As such, high frequency data are often referred to as transaction data. [4]
According to the first approach, investor attention can be approximated with particular financial market-based measures. According to Gervais et al. (2001) [10] and Hou et al. (2009), [11] trading volume is a good proxy for investor sentiment. High (low) trading volume on a particular stock leads to appreciating (depreciating) of its price.
The higher high above 3.25 ('18 highs) also validates the multi-decade reversal. ... "The most important chart we're watching heading into 2025 is the performance of high-momentum stocks vs. low ...
The Market Facilitation Index [1] (MFI) is the creation of Bill Williams. The indicator endeavors to establish the effectiveness of price movement by computing the price movement per volume unit. This is accomplished by subtracting the day's low from the high and dividing the result by the total volume. (See below)
Some high-frequency trading firms use market making as their primary strategy. [10] Automated Trading Desk (ATD), which was bought by Citigroup in July 2007, has been an active market maker, accounting for about 6% of total volume on both the NASDAQ and the New York Stock Exchange. [36] In May 2016, Citadel LLC bought assets of ATD from Citigroup.
In investing and finance, the low-volatility anomaly is the observation that low-volatility securities have higher returns than high-volatility securities in most markets studied. This is an example of a stock market anomaly since it contradicts the central prediction of many financial theories that higher returns can only be achieved by taking ...
Pulse repetition frequency (PRF) is too low to sample Doppler frequency directly; PRF is too high to sample range directly; Pulse Doppler sonar uses similar principles to measure position and velocity involving liquids.