The main difference between both modulations is that in frequency modulation, the frequency of the carrier wave is modified as per the transmit data, while in amplitude modulation, the carrier wave is modified according to the data.

Step-frequency is a radar waveform consisting of a series of sine waves with linearly increasing frequency. The radar measures the phase and amplitude on each frequency and used an inverse Fourier transform of these data to build a time domain profile (A-scan).

In radio transmission, an advantage of frequency modulation is that it has a larger signal-to-noise ratio and therefore rejects radio frequency interference better than an equal power amplitude modulation (AM) signal. For this reason, most music is broadcast over FM radio.

The novelty of the system, built at International Research Center for Telecommunication-transmission and Radar (IRCTR), consists in the fact that 8 frequencies are transmitted simultaneously, which drastically decreases the data acquisition time. …

The amplitude of a wave is the height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on the wave (trough). Frequency refers to the number of waves that pass a given point in a given time period and is often expressed in terms of hertz (Hz), or cycles per second.

Amplitude modulation: Amplitude of carrier waves changes according to change in characteristics of modulating signal. Frequency modulation: Frequency of the carrier waves changes according to the variation in modulating signal.

One of them is Step Frequency Continuous Wave Radar (SFCW Radar). SFCW radar can be used for various purposes. SFCW radar consists of antenna, control unit, signal processing unit. The radar advantages compared to the other radar are this radar is easier to implement and more widely within the range of radar.

The difference between frequency and amplitude is that frequency is a measurement of cycles per second, and amplitude is a measurement of how large a wave is. Amplitude represents the wave’s energy. For example, a sound wave with a high amplitude is perceived as loud.

The time between the beginning of one pulse and the start of the next pulse is called pulse-repetition time (PRT) and is equal to the reciprocal of PRF as follows: PRT = 1. (1) PRF.

Doppler effect is used to measure speed in RADAR sensors. When the fixed-frequency radio wave sent from the sender continuously strikes an object that is moving towards or away from the sender, the frequency of the reflected radio wave will be changed.

The higher the amplitude, the higher the energy. To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.

Difference Between Amplitude Modulation and Frequency Modulation

The transmission of data by radio carriers with the help of addition of signals in which frequency is kept constant and amplitude is modulated, is known as Amplitude Modulation. It is widely used in electronic communications.

Frequency Modulation : It is a modulation in which the frequency of the carrier wave is changes according to the instantaneous amplitude of the modulating signal keeping phase and amplitude as constant. The frequency of the carrier wave is modified in order to send the data or information.

Following table mentions difference between AM, FM and PM modulation techniques. amplitude of carrier wave varies as per amplitude or voltage of modulating signal input. Frequency of carrier wave varies as per voltage of modulating signal input. Phase of carrier wave varies as per voltage of modulating signal input.

Phase Modulation (PM) is the modulation technique in which carrier phase varies based on analog baseband information signal to be transmitted using wireless device. If a constant amplitude as well as constant frequency sine wave carrier is given to the phase shifter the output is phase modulated signal.