High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

11. Remote monitoring and online data downloading capability directly through
radio modem / telephone line / Ethernet.
12. Data Ports: USB, Serial and Ethernet ports. The receiver must be able to
support met package as well as data I/O using VSAT simultaneously.
13. Operating temperature range –40 deg C to +65 deg C
14. Should be waterproof (IP66), shockproof, dustproof, humidity – proof (100%
or better) and condensation proof.
15. All necessary OEM power (2 sets per receiver) / data cables, as required.
16. Automatic power-on and data logging after power failure and keep alive
battery for storing the original configuration and parameter files.
17. Should be capable of tracking all available satellites to 0 degree elevation.
18. The product [specific model] should qualify the GPS calibration norms
conducted by any International Testing Laboratory, and offer must accompany
such certificate.
(a) Quality Control Statistics (10-90 degree)
(i) Receiver must have (observation recorded / observations expected) >99%.
(ii) MP1 (Multi-path on L1) and MP2 values < 0.8 m
(iii) Not more than 1 cycle slip per 20,000 observations on an average; i. e.
(total observations / total slips) > 20,000
(b) Functionality in short baseline processing.
(i) L1, L2, L3 precision < 0.5 min in N, E, 10 mm in vertical.
(B) GPS Antenna:
1. Antenna should be of geodetic quality and separate from the receiver.
2. Repeatability of Antenna phase center variation with elevation angle (10 – 90
degree) should not be greater than 0.2 mm horizontal and 0.5 mm vertical
(ref: NGS Report).
3. Multi-path reduction capability mechanism such that MP1 and MP2 values are
less than 0.8 m for 10-90 degrees elevation angle (ref: TEQC software).
4. Geodetic grade, high gain on all bands.
5. Antenna should have the following operational/storage specifications:
I. Temperature. –40 °C to +55 °C
II. Humidity proof
III. Vibration proof.
IV. Shock proof
V. Waterproof
VI. 100% sealed from sand and dust.
(C) Accessories:
1. Antenna Cable operational without amplifier.
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