What is S-Band Multiple Access (SMA) ?

What is S-Band Multiple Access (SMA) ?
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1 Answer

Answer :

S-Band Multiple Access (SMA) is a technology used by the Tracking and Data Relay Satellite System (TDSS) to provide S-band services. TDRSS provides S-band service through SMA phased arrays. The SMA array has two antennas , one for transmitting and the other for receiving from users. SMA Periodic Array Antennas are built to receive signals from five spacecraft simultaneously , while transmitting a single signal. For SMA arrays , each component code division assigned to support spread-spectrum provides link transmission from Division Multiple Access (CDMA) users. TDRS can generate self-sufficient , high gain antenna beams at ground terminals. Material subsets are used to transmit TDRS forward links to users.
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Related questions

Write SMA properties ?

Description : Write SMA properties ?

Last Answer : SMA Features: Provides five multiple access return channels and one multiple access forward channel per spacecraft. Includes return service , which uses the same frequency (i.e. 226.5 MHz) and CDMA to avoid ... Services as well as SD-Band Single Access (SSA) and Ku-Band Single Access ( KUSA) .

What is S Band ?

Description : What is S Band ?

Last Answer : The S band is part of the microwave band of the electromagnetic spectrum , which is the standard set by IEEE for radio waves . The frequency range of the S band is 2 to 4 ... and various communications satellites such as communications with the International Space Station and the space shuttle .

Q. 13. What is the value of \( 8 \times 1769 \times 125 \) :(a) 1769000(b) 17680007. The sma(c) 1768010(d) 17690108. Whole

Description : Q. 13. What is the value of \( 8 \times 1769 \times 125 \) :(a) 1769000(b) 17680007. The sma(c) 1768010(d) 17690108. Whole

Last Answer : Q. 13. What is the value of \( 8 \times 1769 \times 125 \) : (a) 1769000 (b) 1768000 7. The sma (c) 1768010 (d) 1769010 8. Whole

A convex surface of radiys of curvature 20 cm separates air from glass of refractive index 1.5. Find the position and the nature of the image of a sma

Description : A convex surface of radiys of curvature 20 cm separates air from glass of refractive index 1.5. Find the position and the nature of the image of a sma

Last Answer : A convex surface of radiys of curvature 20 cm separates air from glass of refractive index 1.5. Find ... at 50 cm in front of the convex surface.

What race is sma most common in?

Description : What race is sma most common in?

Last Answer : Feel Free to Answer

What connector is popular in attaching test instruments like oscilloscopes, frequency counters, spectrum analyzers, etc? A. UHF connector B. PL-259 C. BNC D. SMA

Description : What connector is popular in attaching test instruments like oscilloscopes, frequency counters, spectrum analyzers, etc? A. UHF connector B. PL-259 C. BNC D. SMA

Last Answer : C. BNC

Which search algorithm will use limited amount of memory? a) RBFS b) SMA* c) Hill-climbing search algorithm d) Both RBFS & SMA*

Description : Which search algorithm will use limited amount of memory? a) RBFS b) SMA* c) Hill-climbing search algorithm d) Both RBFS & SMA*

Last Answer : d) Both RBFS & SMA*

Which of the following is a type of fiber connector: a. ST b. SC c. SMA d. all of the above

Description : Which of the following is a type of fiber connector: a. ST b. SC c. SMA d. all of the above

Last Answer : d. all of the above

List some properties of SMA* search.

Description : List some properties of SMA* search. 

Last Answer : * It will utilize whatever memory is made available to it.  * It avoids repeated states as for as its memory allow.  * It is complete if the available memory is sufficient to store ... available for entire search tree, the search is optimally efficient.  *Hill climbing.  *Simulated annealing.

What is SMA* search?

Description : What is SMA* search?

Last Answer : SMA* expands the best leaf until memory is full and it drops the oldest worst leaf node and expands the newest best leaf node.

What is Narrow Band ?

Description : What is Narrow Band ?

Last Answer : The band in which the data transfer speed is usually from a minimum of 45 bps to a maximum of 300 bps is called narrow band.

What is El Band ?

Description : What is El Band ?

Last Answer : L band refers to the operating frequency range of 1-2 GHz in the radio spectrum. The wavelength range of L band is 30-15 cm. L-band radar is one of the leading operating ranges used in the ... the high signal is not damaged by the high frequency when the copper cox is transmitted over the wire.

When is Mono FM Band launched ?

Description : When is Mono FM Band launched ?

Last Answer : Mono FM band was started in 1948.

When did the stereo FM band start ?

Description : When did the stereo FM band start ?

Last Answer : Stereo FM band was introduced in 1970.

What is created with multiple fields ?

Description : What is created with multiple fields ?

Last Answer : Files are created with multiple fields.

What is access control ?

Description : What is access control ?

Last Answer : Answer : In order to prevent unauthorized users from accessing the system and its data in any way, it is very important to ensure proper authentication method for corporate systems. This is ... Verification , Key Stroke Analysis , Hand Geometry , Signature Dynamics , Genetic Pattern Analysis etc.

What is access time ?

Description : What is access time ?

Last Answer : : Access time to main memory is the appropriate time to address the memory and read or write a word from it. The access time is the time from the moment a word's address appears in the ... works . In auxiliary memory, the access time is usually the time when the appropriate address is added.

What is Serial Access ?

Description : What is Serial Access ?

Last Answer : : If the bits have to be accessed one after the other starting from the first position then he has serial or sequential access. In this case, the later the position of that bit, the longer its access time. This is a slow system. E.g. , magnetic tape.

What is Random Access ?

Description : What is Random Access ?

Last Answer : If a bit or word of a memory location can be accessed at once, it is called random access. In this case, if you want to access the bit of a position, you do not need to access the bit of the previous position.

What is Microsoft Access ?

Description : What is Microsoft Access ?

Last Answer : Microsoft Access is a powerful relational database program of Microsoft Corporation .

A method of multiple accessing where a given RF channel bandwidth is divided inot smaller frequency band. A. CDMA B. ANIK-D C. TDMA D. FDMA

Description : A method of multiple accessing where a given RF channel bandwidth is divided inot smaller frequency band. A. CDMA B. ANIK-D C. TDMA D. FDMA

Last Answer : D. FDMA

Why does the Striiv Band Activity Tracking App need access to my Identity, Contacts, Location, and Photos/Media/Files?

Description : Why does the Striiv Band Activity Tracking App need access to my Identity, Contacts, Location, and Photos/Media/Files?

Last Answer : LuckyGuy Welcome to android, many apps are collecting your meta data.

Where should I put a game on my mac so that multiple accounts can access it?

Description : Where should I put a game on my mac so that multiple accounts can access it?

Last Answer : answer:Finder>Home>Shared That should do the trick.

What is the problem and its solution in multiple access transmission in networking?

Description : What is the problem and its solution in multiple access transmission in networking?

Last Answer : that of determining who gets to talk (i.e., transmit into the channel), and when.Computer networks similarly have protocols - so-called multiple access protocols - by which nodes regulate their transmission onto the shared broadcast channel.

A multiple access technique used in GSM cellular system A. TACS B. FDMA C. TDMA D. CDMA

Description : A multiple access technique used in GSM cellular system A. TACS B. FDMA C. TDMA D. CDMA

Last Answer : C. TDMA

________is a multiple-access method in which the available bandwidthof a link is shared in time, frequency, or through code, between different stations. A) Random access B) Controlledaccess C) Channelization D) none of the above

Description : ________is a multiple-access method in which the available bandwidthof a link is shared in time, frequency, or through code, between different stations. A) Random access B) Controlledaccess C) Channelization D) none of the above

Last Answer : Channelization

Satellite-Switched Time-Division Multiple Access (SS/TDMA) is A. the method of determining whichdevice has access tothe transmission medium at any time. B. a medium access control technique for multiple access transmission media C. a form of TDMA in which circuit switching is used to dynamically changethechannel assignments D. All of theabove E. None of the above

Description : Satellite-Switched Time-Division Multiple Access (SS/TDMA) is A. the method of determining whichdevice has access tothe transmission medium at any time. B. a medium access control technique for ... switching is used to dynamically changethechannel assignments D. All of theabove E. None of the above

Last Answer : a form of TDMA in which circuit switching is used to dynamically changethechannel assignments

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Description : Which of the following is the multiple access protocol for channel access control? a. CSMA/CD b. CSMA/CA c. Both CSMA/CD & CSMA/CA d. HDLC

Last Answer : c. Both CSMA/CD & CSMA/CA

Which of the following is the multiple access protocol for channel access control? A. CSMA/CD B. CSMA/CA C. Both CSMA/CD & CSMA/CA D. HDLC

Description : Which of the following is the multiple access protocol for channel access control? A. CSMA/CD B. CSMA/CA C. Both CSMA/CD & CSMA/CA D. HDLC

Last Answer : C. Both CSMA/CD & CSMA/CA

You want to understand if users use their mobile phone to access your site. Which of the following approach is preferable? A. Ask "Are you using a mobile phone to access our site?" Yes/No B. Ask "Which type of device are you using to access our site?" with choices: Desktop computer/Mobile Phone/Tablet C. Look at the report Audience/Mobile/Overview D. This cannot be known because people use multiple devices to browse the Web

Description : You want to understand if users use their mobile phone to access your site. Which of the following approach is preferable? A. Ask "Are you using a mobile phone to access our site?" ... report Audience/Mobile/Overview D. This cannot be known because people use multiple devices to browse the Web

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Description : Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on ... a set of virtual machines with each machine being assigned a workload d) All of the mentioned

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Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on conditions c) Computers can be partitioned into a set of virtual machines with each machine being assigned a workload d) All of the mentioned

Description : Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on ... a set of virtual machines with each machine being assigned a workload d) All of the mentioned

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Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on conditions c) Computers can be partitioned into a set of virtual machines with each machine being assigned a workload d) All of the mentioned

Description : Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on ... a set of virtual machines with each machine being assigned a workload d) All of the mentioned

Last Answer : All of the mentioned

Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on conditions c) Computers can be partitioned into a set of virtual machines with each machine being assigned a workload d) All of the mentioned

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Last Answer : All of the mentioned

Write about Channel Access on links. Multiple Access Techniques Frequency Division Multiple Access

Description : Write about Channel Access on links. Multiple Access Techniques Frequency Division Multiple Access

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Which of these statements highlights a valid privacy concern when working with large data sets? I. Data from multiple sources could be linked together to discover someone’s identity. II. For access to location-based services, a user needs to reveal location and identity. III. CAPTCHA is a popular crowdsourcing technique that can be used to sense if the user is human. A. I and II only B. I only C. I and III only D. I, II and III

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Last Answer : B. I only

It is better to use files than a DBMS when there are (A) Stringent real-time requirements. (B) Multiple users wish to access the data. (C) Complex relationships among data. (D) All of the above. t

Description : It is better to use files than a DBMS when there are (A) Stringent real-time requirements. (B) Multiple users wish to access the data. (C) Complex relationships among data. (D) All of the above.

Last Answer : (B) Multiple users wish to access the data.

Which of the following multiple access techniques are used by second generation cellular systems? a) FDMA/FDD and TDMA/FDD b) TDMA/FDD and CDMA/FDD c) FDMA/FDD and CDMA/FDD d) FDMA/FDD only

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Last Answer : b) TDMA/FDD and CDMA/FDD

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Description : UMTS use which multiple access technique? a) CDMA b) TDMA c) FDMA d) SDMA

Last Answer : a) CDMA

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Last Answer : a) multiple access point are inter-connected with each other

Transmission protocol, PRMA stands for _________ a) Pocket reservation multiple access b) Packet register multiple access c) Pocket register multiple access d) Packet reservation multiple access

Description : Transmission protocol, PRMA stands for _________ a) Pocket reservation multiple access b) Packet register multiple access c) Pocket register multiple access d) Packet reservation multiple access

Last Answer : d) Packet reservation multiple access

Which multiple access technique is used by IEEE 802.11 standard for wireless LAN? a. ALOHA b. CSMA/CA c. CDMA d. none of the mentioned

Description : Which multiple access technique is used by IEEE 802.11 standard for wireless LAN? a. ALOHA b. CSMA/CA c. CDMA d. none of the mentioned

Last Answer : b. CSMA/CA

List the various multiple access techniques.

Description : List the various multiple access techniques.

Last Answer : 1. Frequency Division Multiple Access (FDMA) 2. Time Division Multiple Access (TDMA) 3. Code Division Multiple Access (CDMA) 4. Space Division Multiple Access (SDMA)